Gyrus

Gyrus, Waker of Corpses is a hydra from Alara.

History
The terrifying hydra Gyrus hunts in the swamps of Jund, one of the reunited shards of Alara, but not alone. Its heads dredge dead things from the murky water and animate them as shadows of their former selves. Zombified crocodiles, snakes, and other creatures serve Gyrus, bringing food to blunt the hydra's insatiable hunger.