Atlantis - Official Calamity Mod Wiki

The Atlantis is a Hardmode wand which is dropped by the Leviathan and Anahita. It shoots halberds which pierce and travel through walls, in a distinct pattern consisting of one halberd in a straight line, then two halberds connected in the shape of a V, heading outwards from the player in a straight line.

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Nahlyn, Total Calamity Wiki

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Terraria Calamity Mage

Calamity mod Wiki got Raided

Nahlyn, Total Calamity Wiki

the Atlantis projectiles are just randomly appearing and making it

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Official Calamity Mod Wiki

Nahlyn, Total Calamity Wiki

all hardmode calamity bosses put into one : r/CalamityMod