Calamity's Vanities/Calamitous Soul Artifact

The Calamitous Soul Artifact is a craftable Expert Mode-exclusive pet summoning item. It summons a small Sepulcher and a baby Brimstone Monster to follow the player. During April Fools, the baby Brimstone Monster gains a unique appearance.

Trivia

 * The baby Brimstone Monster's appearance during April Fools is a reference to the emote "Hage", used by several servers in the Terraria modding community.