Drana, the Last Bloodchief

The reanimation trigger with a hostile guardrail built directly into the effect: the defending player picks which nonlegendary creature comes back from your graveyard. Most recursion of this power lets the controller choose, which is precisely what turns it into a combo engine; handing the selection to your opponent converts a would-be loop into a negotiation. They will always return your weakest body, so the card rewards a graveyard where even the floor is worth having on the battlefield, and it flips the usual reanimator math: instead of stacking your bin with a single haymaker, you want a spread of creatures whose worst-case return still advances the plan. The +1/+1 counter and the retroactive Vampire type are the sweeteners that keep the whole thing from feeling like a hostage exchange, quietly turning each attack into a slow assembly of a Vampire board even when the opponent is doing their best to give you nothing. And because the trigger fires on attack rather than on cast or on entry, the recursion is a repeating stream rather than a one-shot: every combat step is another creature clawing back, which is why the evasive body matters as much as the ability. A 4/4 flier that keeps feeding itself value each turn is a clock and an engine in one card, and the opponent's power to choose the creature is the only thing standing between it and outright inevitability.