Plagueshell

The Plagueshell is a Hardmode enemy that spawns in the Jungle after Golem has been defeated. It attacks by going into its shell and hurling itself at players, dealing large amounts of damage on contact.

Trivia

 * The Plagueshell seems to be a regular Giant Tortoise that has been struck by the same Plague mentioned in The Plaguebringer Goliath's lore.