Gloomshrieker

Regrowth on a body has been printed before, but the exile clause rewrites what that body is for. When it enters, it hands back any permanent card from your graveyard, from a bomb to a fetched land to another value creature. The catch sits in the third line: because it exiles itself when it would die, it never rejoins the yard it just dipped into. That reverses how black-green usually wants its creatures to behave. Most Golgari value pieces are built to loop through the graveyard indefinitely; this one starts an engine on the way in and then quietly removes itself from the recursion loop, so any reanimation plan around it has to treat its return-a-permanent trigger as a one-time start rather than a renewable resource. The exile clause is the tax that pays for the flexibility of returning anything. Menace on the 2/1 gives the card a second dimension it gets for free: you keep the card-advantage trigger from entering and still have a body that pressures the board, since a 2/1 with menace demands two creatures to block it. The design lives in that tension: a graveyard enchantment creature that pulls a card back while refusing to become fuel itself, forcing the deck around it to count on exactly one loop rather than a permanent it can grind back over and over.