Kirol, History Buff // Pack a Punch
Graveyard payoffs almost universally count cards going in; this one counts them coming out. That reversal is the entire engine. Kirol arms its spell half whenever cards leave your graveyard, which means the usual recursion toolkit (flashback, escape, embalm, exile-return effects, straight reanimation) does double duty: you cast a creature back out of the yard, and in the same beat you reload the buff. The spell it hands you, Pack a Punch, mills before it grows a target, so casting it can eventually seed its own retrigger once that milled card claws its way back out again.
What you get is a small two-color body that wants graveyard motion around it rather than raw card advantage. Two +1/+1 counters and trample on a chosen creature is the payoff you actually cast for, but the friction is deliberate: each cast unprepares Kirol, so re-arming requires another card leaving the yard between activations. A stocked graveyard can supply several of those triggers in sequence, but a pile that simply hoards cards without shipping them out does nothing. The reward is built for a shell that treats its graveyard as a moving resource, constantly recurring and exiling cards out of it. Kirol punishes stagnation and rewards traffic, a stranger and more demanding ask than most aggressive value creatures make of a deck.
