Ark of the Cosmos

Type	Weapon
Damage	501 Melee
Knockback	9.5 (Extremely Strong)
Critical chance	19%
Use time	14 Very Fast
Velocity	28
Tooltip	Fires different homing projectiles based on what biome you're in; Upon hitting an enemy you are granted a buff based on what biome you're in; Projectiles also change based on moon events
Rarity
Sell	50

The Ark of the Cosmos is a craftable post-Moon Lord broadsword that autoswings. It is the final upgrade of the Ark of the Ancients and Biome Blade. It fires a tile-ignoring and enemy-piercing beam sword of one of four colors when swung. In addition, it rains homing, tile-ignoring stars towards the cursor. The blue and orange sword beams inflict the Elemental Mix debuffs onto enemies, while the green and pink beams only inflict the Holy Flames debuff.

Upon any of its projectiles hitting an enemy, a projectile is spawned and the player receives a buff. This is dependent on the biome the player is in. The moon events will also grant different buffs to the player when they are active. All buffs last 10 seconds.

During a Blood Moon, it will grant the Battle buff.
During a Frost Moon, it will grant the Rapid Healing buff.
During a Pumpkin Moon, it will grant the Well Fed buff.

In the Astral Infection biome, the player will gain the Gravity Normalizer buff and the Ark of the Cosmos will fire Astral Stars.
In the Jungle, the player will gain the Thorns buff and the Ark of the Cosmos will fire the leaf projectile from the Chlorophyte Armor.
In the Snow and Ice biomes, the player will gain the Warmth buff and the Ark of the Cosmos will fire the projectile from the Ice Blade.
In the Ocean and Sulphurous Sea, the player will gain the Wet debuff and the Ark of the Cosmos will fire the bubbles from the Flairon.
In The Corruption, the player will gain the Wrath buff and the Ark of the Cosmos will fire the flames from the Cursed Flames.
In The Crimson, the player will gain the Rage buff and the Ark of the Cosmos will fire the projectiles from the Golden Shower.
In the Dungeon, the player will gain the Dangersense buff and the Ark of the Cosmos will fire the bolt from the Water Bolt.
In the Desert, the player will gain the Endurance buff and the Ark of the Cosmos will fire the black blast from the Onyx Blaster.
In the Glowing Mushroom biome, the player will gain the Spelunker buff and the Ark of the Cosmos will fire the mushrooms left by the Mushroom Spear.
In The Underworld and Brimstone Crag, the player will gain the Inferno buff and the Ark of the Cosmos will fire the projectile from the Flower of Fire.
In The Hallow, the player will gain the Heartreach buff and the Ark of the Cosmos will fire the explosions produced by the Rainbow Crystal Staff's crystal's beams.

While nearby a Nebula Pillar, the player will gain the Magic Power buff and the Ark of the Cosmos will fire the normal projectile from the Nebula Blaze.
While nearby a Stardust Pillar, the player will gain the Summoning buff and the Ark of the Cosmos will fire the mini cell from the Stardust Cell Staff.
While nearby a Solar Pillar, the player will gain the Titan buff and the Ark of the Cosmos will fire the explosion from the Solar Eruption.
While nearby a Vortex Pillar, the player will gain the Ammo Reservation buff and the Ark of the Cosmos will fire the rocket from the Vortex Beater.

Otherwise, (e.g. in the Abyss/Forest) it will grant the Dryad's Blessing buff and the Ark of the Cosmos will fire the orbs from the Terrarian.
- The same effect occurs when the player is in a non-Calamity modded biome.

In addition to this, the sword inflicts the same debuffs as its predecessors based on the biome the player is in for 20 seconds.

Its best modifier is Legendary.

Crafting[]

For a full crafting tree, see here.

Recipe[]

Crafting Station
Draedon's Forge
Ingredient(s)		Amount
	Ark of the Elements	1
	Galaxia	1
	Auric Tesla Bar	4
Result
	Ark of the Cosmos	1

Notes[]

If the player travels into a different biome after a projectile is fired, the projectile's effect will change to the new biome.

Tips[]

Ark of the Cosmos is useful against enemies who have high mobility or keep a safe distance away from the player as it shoots lots of high-damage, homing projectiles.

Trivia[]

The base damage of the Ark of the Cosmos is the sum of the base damages of the Galaxia and Ark of the Elements.