The Eidolon Wyrm is the strongest miniboss in the Calamity Mod. It has a lot of Hp and a high defense reduction. It is also a reference to the Ghost Leviathan from Subnautica. The Eidolon Wyrm can only be found in the Abyss Biome.
Person 1: Have you heard of the Eidolon Wyrm?
Person 2: Yeah. It's really hard.
Person 1:It definitely is.
Person 2: Yeah. It's really hard.
Person 1:It definitely is.
by Origorath, The Mad God November 20, 2020