Helbrute

The Sarcophagus keyword is the whole reason this beater matters, and it borrows a recursion pattern that older black creatures used sparingly: pay a graveyard cost to bring the body back, but pay it by cannibalizing the yard rather than by paying life or mana alone. Bloodghast recurs off lands; Gravecrawler recurs off a Zombie board; this one asks you to exile another creature card from the graveyard each time it comes back, so every reanimation eats a resource you might otherwise have wanted. That trade is what keeps a 5/4 with haste from being a free loop: the graveyard is a finite fuel tank, and each casting drains it. Structurally the design pushes toward sacrifice shells and aristocrat engines, where creatures die on purpose and the graveyard refills fast enough to feed the Dreadnought again and again. The haste is not decoration either; a body that keeps returning from the yard wants to attack the turn it lands, before the opponent can set up a second removal spell, and the exile cost means each answer they spend only buys them the time it takes you to fill the yard back up. It is a recursion threat built to grind, priced so the grind costs you something every turn you choose to keep grinding.