Celestial Pillars

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Celestial Pillars
Solar Pillar
Solar Pillar.png
Vortex Pillar
Vortex Pillar.png
Nebula Pillar
Nebula Pillar.png
Stardust Pillar
Stardust Pillar.png
Statistics
Type
Environment
AI TypeCelestial Pillar AI
Damage0
Max Life20000
Defense20
KB Resist100%
Immune toAll debuffs except Whip debuffs
  • Internal NPC ID: 517, 422, 507, 493

The Celestial Pillars (also known as the Lunar Pillars, Lunar Towers, or Celestial Towers) are four bosses that appear during the Lunar Events, when the Lunatic Cultist has been defeated. They appear at four locations equally spaced across the map (see pillar spawning mechanics below), and are completely stationary, apart from slowly bobbing up and down in place. Each pillar takes control of the map in a circular area around it with a radius of 250 tiles, or 500 feet.[1] When the player is in that affected area, the background will change to a pillar-specific one, and only pillar-specific enemies will spawn, in large numbers.

The four Celestial Pillars are the Solar Pillar, the Vortex Pillar, the Nebula Pillar and the Stardust Pillar. Judging by the gear craftable from the fragments that they drop when defeated, they represent the four damage types in Terraria: Solar for melee, Vortex for ranged, Nebula for magic, and Stardust for summoner.

Initially, the Celestial Pillars have a large force field around them, which prevents them from taking any damage. In order to remove the force field, the player needs to defeat 100 / 150 enemies that correspond to that particular pillar. After doing that, the force field will lower and the pillar can be damaged. Enemies will continue to spawn until the pillar is defeated. If the player exits the world without destroying a pillar, all damage done to it will be reset, and the kill count needed to remove the shield will also reset. However, player deaths will not reset them. When destroyed, the Celestial Pillars each drop between 12–60 / 24–100 Lunar Fragments of their type.

The Pillars themselves are fairly easy to defeat, having only 20000 HP each and having weak attacks (none in the case of the Nebula Pillar). The direct threat comes from the minions they spawn; they can deal high amounts of damage, can inflict debuffs, and easily swarm the player if not dealt with quickly.

There is no set order in which the Celestial Pillars must be defeated. The following status messages will appear from whichever pillars are taken down first, second, third, and fourth:

  • First pillar defeated: "Your mind goes numb..."
  • Second pillar defeated: "You are overwhelmed with pain..."
  • Third pillar defeated: "Otherworldly voices linger around you..."
  • Fourth pillar defeated: "Impending doom approaches..."

After defeating all four Celestial Pillars, the screen will start to vibrate, and the music volume will lower before eventually going completely silent. One minute after the pillars' defeat, the Moon Lord will spawn.

Solar Pillar[edit | edit source]

Solar Pillar
Solar Pillar.png
Map Icon Solar Pillar.png
Map Icon
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Statistics
Type
Environment
AI TypeCelestial Pillar AI
Damage0
120 (Solar Fragment)
Max Life20000
Defense20
KB Resist100%
Immune toAll debuffs except Whip debuffs
Drops

The Solar Pillar is the melee-themed pillar, with minions that bear strong defensive abilities and deal heavy contact damage. When nearby, the world is tinted orange, and the background will display a massive orange planet with a shower of falling meteors. It drops Solar Fragments when defeated.

The Solar Pillar will continuously spew fireballs that deal high contact damage.

It is widely considered to be the most difficult of the four, due to the Crawltipede forcing the player to stay grounded, leaving them vulnerable to the variety of other ground enemies that the pillar spawns.


Enemy Spawn chance[2] Max. number[3]
Corite Corite 14.29*1/7 (14.29%) (unlimited)
Crawltipede Crawltipede 14.29*1/7 (14.29%) 1
Drakanian Drakanian 14.29*1/7 (14.29%) 2
Drakomire Drakomire 14.29*1/7 (14.29%) 2
Drakomire Rider Drakomire Rider 14.29*1/7 (14.29%) 1
Selenian Selenian 14.29*1/7 (14.29%) (unlimited)
Sroller Sroller 14.29*1/7 (14.29%) (unlimited)
  • The Crawltipede is a long, fast-moving worm-like enemy that can only be damaged on its tail. It is passive while the player has blocks under their feet, and only starts attacking once the player takes flight. While it has high health, damage against it is multiplied by 10.
  • The Sroller can curl into a ball and roll at the player, potentially dealing a large amount of damage on contact.
  • The Corite is a flying enemy that can shroud itself in fire and charge towards the player at high speeds, traveling through blocks.
  • The Selenian is a ground-based enemy that wields two flaming swords. It can curl up and fly towards the player at high speed. When it does so, it will reflect certain player-fired projectiles.
  • The Drakomire charges at the player and shoots solar flares like the Solar Pillar out its mouth, dealing moderate damage.
  • The Drakanian is a fighter with a moderate speed and damage. It can spawn riding a Drakomire as a Drakomire Rider.

Vortex Pillar[edit | edit source]

Vortex Pillar
Vortex Pillar.png
Map Icon Vortex Pillar.png
Map Icon
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Statistics
Type
Environment
AI TypeCelestial Pillar AI
Damage0
Max Life20000
Defense20
KB Resist100%
Immune toAll debuffs except Whip debuffs
Drops

The Vortex Pillar is the ranged-themed pillar, with fast, mobile minions capable of long-ranged projectile attacks. When nearby, the world is tinted teal, and the background will display a teal planet with lightning. It drops Vortex Fragments when defeated.

It will occasionally open a portal above the player that spawns two Alien Hornets or a lightning bolt, identical to the one produced by the Vortexian on death.

This pillar's color scheme seems to resemble that of the Moon Lord.


Enemy Spawn chance[2] Max. number[3]
Alien Hornet Alien Hornet 22.22*2/9 (22.22%) (unlimited)
Alien Larva Alien Larva n/a (unlimited)
Alien Queen Alien Queen 22.22*2/9 (22.22%) 3
Storm Diver Storm Diver 22.22*2/9 (22.22%) 3
Vortexian Vortexian 44.44*4/9 (44.44%) 4
  • Storm Divers shoot a small volley of projectiles that deal very high damage.
  • Alien Queens can fire stingers that cause the Distorted debuff, which causes the player to be unable to fly upwards or fall downwards for a few seconds, forcing them to only be able to move horizontally.
  • The Alien Queen spawns 3 Alien Larvae when killed, which will grow to Alien Hornets and into more Alien Queens if they are left for too long.
  • Vortexians are fighters that, on death, summon a portal which shoots a lightning bolt that deals relatively low damage.

Nebula Pillar[edit | edit source]

Nebula Pillar
Nebula Pillar.png
Map Icon Nebula Pillar.png
Map Icon
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Statistics
Type
Environment
AI TypeCelestial Pillar AI
Damage0
Max Life20000
Defense20
KB Resist100%
Immune toAll debuffs except Whip debuffs
Drops

The Nebula Pillar is the magic-themed pillar, with minions capable of flight, teleportation, and other unusual attacks and abilities. When nearby, the world is tinted pink, and the background will display a pinkish-purple planet with beams of energy pulling debris into the sky. It drops Nebula Fragments when defeated.

The Nebula Pillar is the only pillar that does not have any attack of its own. In addition, its enemies have a pulsing aura effect to make them easier to see.


Enemy Spawn chance[2] Max. number[3]
Brain Suckler Brain Suckler 41.67*5/12 (41.67%) (unlimited)
Evolution Beast Evolution Beast 25*1/4 (25%) 3
Nebula Floater Nebula Floater 8.33*1/12 (8.33%) 2
Predictor Predictor 25*1/4 (25%) 2
  • The Nebula Floater shoots lasers that move very fast and deal large amounts of damage. It will teleport around the player when hit, making it more difficult to dodge its projectiles.
  • The Brain Suckler can attach itself to the player, inflicting the Obstructed debuff and dealing damage. It flies through obstructions.
  • The Evolution Beast shoots projectiles that chase the player through obstructions and deal high damage multiple times, as well as dealing moderate contact damage.
  • The Predictor shoots 4 fast-moving, very high-damage projectiles at once.

Stardust Pillar[edit | edit source]

Stardust Pillar
Stardust Pillar.png
Map Icon Stardust Pillar.png
Map Icon
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Statistics
Type
Environment
AI TypeCelestial Pillar AI
Damage0
Max Life20000
Defense20
KB Resist100%
Immune toAll debuffs except Whip debuffs
Drops

The Stardust Pillar is the summoning-themed pillar, with large swarms of enemies that spawn smaller, weaker entities to attack. When nearby, the world is tinted blue, and the background will display a blue planet and a sparkling effect. It drops Stardust Fragments when defeated.

The Stardust Pillar is able to spawn enemies above itself on screen. It will spawn multiple energy orbs, which will be linked together with lines and then disappear, spawning in a random enemy.


Enemy Spawn chance[2] Max. number[3]
Flow Invader Flow Invader 12.5*1/8 (12.5%) (unlimited)
Milkyway Weaver Milkyway Weaver 12.5*1/8 (12.5%) (unlimited)
Star Cell Star Cell 12.5*1/8 (12.5%) (unlimited)
Stargazer Stargazer 37.5*3/8 (37.5%) (unlimited)
Twinkle Twinkle n/a (unlimited)
Twinkle Popper Twinkle Popper 25*1/4 (25%) (unlimited)
  • The Milkyway Weaver is similar to the Crawltipede by flying and attacking players in midair, but it is smaller and can only be damaged on the head.
  • The Star Cell enemy, if killed, will split into smaller-sized versions that grow into full-sized versions after a few seconds, which can cause enemies to fill the screen.
  • The Flow Invader will summon smaller creatures around it, which will shoot themselves like projectiles at the player after there are three around the Flow Invader. The smaller creatures around it will become projectiles and shoot towards the player after the Flow Invader is killed, and can deal massive damage.
  • The Twinkle Popper, along with dealing contact damage, releases a small enemy called a Twinkle that chase players and explode to deal heavy damage.
  • The Stargazer runs after players and conjures powerful lasers to damage them.

Notes[edit | edit source]

  • Similar to the Old One's ArmyDesktop, Console, and Mobile versions, celestial enemies do not drop coins.
  • NPCs will not try to attack pillars, even if they are in range.
  • Prior to 1.4.1, PylonsDesktop and Mobile versions cannot be used when any pillar is alive.
  • Desktop and Mobile versions In Expert Mode or Master Mode, pillars will drop additional fragments depending on the amount of players.
  • The pillars and their respective enemies can spawn on background walls, unlike most other enemies.

Achievements[edit | edit source]

Achievement Star Destroyer.png
Star Destroyer • “Defeat the four celestial towers of the moon.”
Defeat all four Celestial Pillars. Desktop, Console, and Mobile versions

Tips[edit | edit source]

For more elaborate strategies on defeating Celestial Pillars, including weapon and arena recommendations, see Guide:Lunar Event strategies.

All pillars[edit | edit source]

  • A player can tell if they have reached the kill count or not by seeing if, after killing an enemy, a colored line travels from the corpse to the Pillar. If the line does not appear, the kill count has been reached. As well, the shield surrounding the Celestial Pillars becomes more transparent as it becomes closer to breaking. If the player is using the lighting type "Color", they can look for the shockwave that the pillar sends in all directions before breaking.
  • Before starting the Lunar Events, it is worthwhile to lay a teleporter line across the map, with enough stations that the player can at least choose which pillar to approach first.
  • Some enemies can travel or attack through blocks.
    • For this reason, if a player has an effective weapon that can deal damage through walls (such as the Solar Eruption), they can for the most part build a shelter under the surface and attack these incoming enemies. This strategy is the most difficult for the Nebula Pillar due to the Evolution Beast's spit-like projectiles and the Brain Suckler's debuffs.
  • The weapons gained from defeating the first pillar(s) can be very helpful in defeating the others. The Solar Pillar yields the Solar Eruption and Daybreak, the Vortex Pillar gives the Phantasm and Vortex Beater, the Nebula Pillar provides the Nebula Arcanum and Nebula Blaze, and the Stardust Pillar enables the Stardust Dragon Staff and Stardust Cell Staff.
    • It may be best simply to target the pillar matching the player's preferred class, thus gaining at least one powerful weapon of it.
  • Players can use the GPS to know the height of one Pillar, build/expand a nearby building to provide a firing platform at this depth, then pelt the Pillars with a Rocket Launcher, optionally backed by a Sniper Rifle. The time the rocket takes to reach a pillar can be long: in a large map, a Rocket takes ~1 min to travel from the center of the map to the farthest Pillar.
  • If the player or players have acquired the Vampire Knives once a pillar's shield is destroyed the player can regenerate health extremely fast by firing the knives at point blank range at the pillar.
  • A strategy for taking out the pillars is to stand near the edge of a pillar spawning area and to retreat and recover when at low health until its shield is down.

Solar Pillar[edit | edit source]

  • While fighting the Solar Pillar enemies, it is highly recommended to stay grounded. Airborne players are easy prey for the Crawltipede minions, which do an excessive amount of damage, but will only target airborne players.
  • If the player has a skybridge set up in their world, standing on it will allow them to shoot down at enemies on the ground and even the pillar without being targeted by the Crawltipedes. Keep in mind Srollers will still be able to jump up to the platform and roll towards the player.
  • It is highly suggested not to use bullets, arrows, or most projectiles that are not rockets, at least not on Selenians, as they can reflect non-rocket projectiles. These projectiles will deal the same damage to the player that they would have dealt to the Selenian.
  • If the player has a Neptune's Shell, a combined accessory with its effect, or Gills Potions, then standing in a large pool of water under or near the pillar will allow them to move around off the ground, without being targeted by Crawltipedes. In addition, this will also cause most enemies, with the exception of Corites, to move slower, and make it easier to target them.
  • If available, the Scutlix Mount improves forward firepower and ground maneuverability considerably, making the fight much easier.
    • Remember that the Selenians can reflect the lasers.
  • When fighting the Solar Pillar, try building a small building with doors, platforms, and make it two floors tall, right on the edge of where the Pillar starts spawning enemies, to help block off some enemies from swarming the player, and to force them into a small and easy to defend area. Only the Corites will fly through walls.
  • Oddly, enemies that the Solar Pillar spawns are not immune to the On Fire! debuff.
  • Weapons such as the Possessed Hatchet or the Stardust Dragon Staff will only target the tail of Crawltipedes, and this can kill them quickly and easily, making the fight much easier.
  • With a ranged weapon, the Corites can be locked in place by shooting them while they are spinning.

Vortex Pillar[edit | edit source]

  • If the player sees a swirling portal in midair, they should keep their distance and move quickly. The portal will either shoot a lightning bolt similar to the Lunatic Cultist's attack or spawn an Alien Hornet.
    • When the portal shoots a lightning bolt, there will be a blue swirling marker pointing towards the direction the lightning bolt will strike at, but they will only shoot downwards.
    • The Vortex Pillar will always spawn Alien Hornets on back-walls with a direct line towards the player if there are any on its screen. If not, it can spawn Alien Hornets anywhere within an approximate 300 block radius of the Pillar.
  • Because most of the enemies try to stay at the same elevation as the player, staying on the ground removes much of the mobility that Alien Hornets and Storm Divers have.
  • This is the only pillar where enemies or projectiles can't travel through blocks, and thus, taking cover is very effective. However, it is somewhat slow as many enemies keep their distance.
  • Avoid getting swarmed by Alien Queens, as they easily grow from Alien Larvae and Alien Hornets and the Distorted debuff greatly decreases the player's fighting and agility.

Nebula Pillar[edit | edit source]

  • When fighting, take caution to avoid getting hit by a Brain Suckler. They cause the Obstructed debuff, which is similar to Darkness but with a darker shade. It will persist until the player kills the Brain Suckler stuck to them, and for a moment thereafter.
  • Be very wary of Nebula Floaters. They do high damage with high accuracy, and their tendency to teleport, especially when harmed, can make them unpredictable.
    • They can also teleport directly in front of the player and fire at point blank: if the player wouldn't survive another shot and can't heal up, it may be best to retreat. Be careful when flying in a straight line, as the Floater will deal potentially fatal contact damage if it teleports in front of you.
  • Kill Evolution Beasts quickly, because once they get in range they will fire a slow but highly damaging ball of energy that tracks the player, passes through walls, can deal continuous damage, and only expires after a few seconds. These will force the player to move around into other hazards.
  • Keep an eye out for Predictors because they will stay at distance, not attempting to get close to the player, and shoot several Nebula Piercers in a similar fashion to how Storm Divers fire their shotguns.

Stardust Pillar[edit | edit source]

  • Using splash-damage weapons on Star Cells is perhaps the easiest way to kill them, as it will destroy all of the split cells as well as the initial cell.
  • A quick and easy way to break the shields is to lead a Star Cell away from the pillar, pop it into its smaller orbs, then let those orbs grow into full star cells. This creates an infinite loop, and the new ones will also count towards the counter.
  • On death, the Flow Invader will hurl up to three projectiles directly at the player. Be ready to dodge when the player kills this creature.
  • Stargazer lasers deal very high damage, but they have difficulty targeting the player without direct line of sight. Weapons that ignore terrain or can go around it will be very effective, such as Yoyos, Minions and Chlorophyte Bullets.

Pillar spawning mechanics[edit | edit source]

When it is time for the four pillars to spawn, the game follows the following steps.[4] All coordinates are in tiles.

  1. Randomly arrange the order of the 4 pillars.
  2. Multiply the width of the world by 0.2, 0.4, 0.6, and 0.8 to find rough spawn locations for the pillars, equally spaced from each other and the world's edges.
    (For example, a large world is 8400 tiles in width, so the four pillars will be spawned at somewhere near xa=1680, xb=3360, xc=5040, and xd=6720.)
  3. For each pillar:
    1. Pick a random x1 coordinate in the range [x0 - 100, x0 + 100], where x0 represents the x coordinate of the location the pillar was assigned to.
    2. Try to find out a possible y1 to spawn the pillar at (x1, y1). The y1 is processed from the 0′ surface level to 100 tiles above it, from low to high. This place is a valid spawning space for a pillar if:
      • There are no solid blocks (does not include platforms and other similar tiles) in a 20×35-tile rectangle centered on the point 2.5 tiles above (x1, y1), i.e., the rectangle with the vertices ABCD, where A = (x1 - 10, y1 - 20), B = (x1 + 10, y1 - 20), C = (x1 + 10, y1 + 15), and D = (x1 - 10, y1 + 15).
      • The place is outside the player's screen plus a 20% margin, i.e., the four vertices ABCD are all outside a rectangle of 2304 (1920*1.2) by 1296 (1080*1.2) pixels (144×81 tiles) centered on the player.
    3. If the two checks above succeeded (hence the place is a valid spawning space), then the pillar spawns at (x1, y1).
    4. If no valid y1 could be found, then go back to the first step and pick a new x1. Repeat the entire process no more than 30 times.
    5. If no valid coordinates could be found after 30 times, give up and just spawn the pillar at a settled point: (x0, y0 - 40), i.e., 40 tiles above surface level at the initially determined location x0.

Pillar relative location[edit | edit source]

Using the above spawning mechanics, the approximate location of each pillar can easily be computed relative to the world's default spawn point (i.e. the center of the map).

Assuming S is the world size (in feet) and PX is the location factor (0.2, 0.4, 0.6, or 0.8) for pillar X, then the relative location RX can be computed as RX = (S * PX) - (S / 2). The exact location of each pillar will vary randomly up to 100 tiles (200 feet) left or right.

This is visualized in the following table, which represents the profile of a world. Remember that the order of pillars is random, the one used here is only an example.

Horizontal position in feet
World size [ Pillar 1 Pillar 2 Map Spawn.png Pillar 3 Pillar 4 ]
Small -4,200 -2,520 -840 0 840 2,520 4,200
Medium -6,400 -3,840 -1,280 0 1,280 3,840 6,400
Large -8,400 -5,040 -1,680 0 1,680 5,040 8,400

Trivia[edit | edit source]

  • Correspondences:
    • As noted above, both the craftable gear and the enemies from the pillars correspond to the four main classes in the game: Solar – melee, Vortex – ranged, Nebula – magic, Stardust – summoner.
    • When in a pillar's area, the entire area nearby will turn the pillar's color: Solar – orange, Vortex – teal, Nebula – purple, Stardust – blue). This effect will only occur if the lighting mode is set to "Color" or "White".
    • The four pillars could also reference the lifespan of a star: Solar – a living star, Vortex – a collapsing star as it dies, Stardust – the remains of a star's corpse, and Nebula – the birth of a new star.
The background scenery from a Hallowed Desert and Vortex Pillar combined.
  • Occasionally, the background scenery of the biome the pillar is in will overlap with the background scenery that appears when near the pillar (see image on the right).
  • All of the Celestial Pillars have a humanoid enemy:
  • The Nebula Pillar is the only pillar not to have a directly damaging attack; the Solar Pillar attacks with fireballs, the Vortex Pillar summons portals that spawn Alien Hornets, and the Stardust Pillar summons portals that spawn any enemy.
  • The Celestial Pillars are the only bosses in the game which do not deal any sort of contact damage.
  • If the lighting mode is set to "Color" or "White", the shield will have a distortion effect. When the shield is down, it sends a shockwave in all directions. These effects do not occur in the "Retro" or "Trippy" modes.
  • Prior to 1.4.0.1Desktop and Mobile versions, reversing gravity with a Gravitation Potion or Gravity Globe has a strange effect on a pillar's shield. Instead of being stationary around the pillar like it normally would, its vertical position changes according to its relation to the player. This is only cosmetic, as the pillar cannot be attacked when the shield appears to be removed.
  • The projectile spawned upon a celestial enemy's death (until the pillar's shield falls) is called "Released Energy" and has the projectile ID 629. A player can spawn this projectile using mods. If one is spawned while there are no pillars, it will target the Old Man by the Dungeon. If the Old Man is not present, the Released Energy will despawn immediately.
  • Quitting and re-entering the game will put the pillars at the top of their bobbing motion while maintaining their position, causing them to sink slightly.
  • All of the Celestial Pillars have two health bars, the shield (blue) and the pillar itself (red). This makes the Celestial Pillars the only bosses in the game to have two separate health bars.

BestiaryBestiary entries

  • Solar Pillar: "Representing a flaming celestial event known as 'solar flares', this tower holds the seal locking away a terrifying tyrant."
  • Vortex Pillar: "Representing a deep celestial void known as 'vortex', this tower holds the seal locking away a terrifying tyrant."
  • Nebula Pillar: "Representing a stormy celestial body known as 'nebula', this tower holds the seal locking away a terrifying tyrant."
  • Stardust Pillar: "Representing a glittering celestial remnant known as 'stardust', this tower holds the seal locking away a terrifying tyrant."

History[edit | edit source]

  • Desktop 1.4.0.1:
    • Lunar Fragment drops now scale with player count in Expert Mode.
    • The Nebula Pillar's shader is now slightly less pink, and its enemies have been given a pulsing aura effect.
    • The sprites for all of the background planets have been updated.
    • All pillars will now rise to the top if any blocks, actuated or not, are behind it.
    • Fixed (again) an issue where Celestial Pillar shields would fly into the sky when reversing gravity.

References[edit | edit source]

  1. Information taken from the Desktop version Desktop 1.4.0.5 source code, method UpdateBiomes() in Terraria.Player.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.1.1.
  2. 2.0 2.1 2.2 2.3 Describes the relative spawn chance, i.e., the likelihood of spawning this enemy instead of one of the others. Actual, real spawn chances may vary. Information taken from the Desktop version Desktop 1.4.0.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.1.1.
  3. 3.0 3.1 3.2 3.3 This limit is checked when attempting to spawn a new enemy; it will not be spawned if there are already this many enemies of the type alive. "Unlimited" does not mean actually unlimited, just that no limit is checked when spawning an enemy – the usual restrictions apply (see NPC spawning). Information taken from the Desktop version Desktop 1.4.0.5 source code, method SpawnNPC() in Terraria.NPC.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.1.1.
  4. Information taken from the Desktop version Desktop 1.4.0.5 source code, method TriggerLunarApocalypse() in Terraria.WorldGen.cs. There may be inaccuracies, as the current Desktop version Desktop version is 1.4.1.1.