Eccentric Pestfinder // Turn Stones

Prepared is a delayed-copy mechanic dressed up as a payoff, and the pairing here is the cleanest expression of what the keyword is for. A 5/5 trample body for four is a fair rate on its own; the split back half, Turn Stones, is what the body is really guarding. Every end step you gained life, the front face arms itself, and once armed you may cast a copy of Turn Stones (you still pay its cost), spinning out a Pest token per opponent that each returns a point of life on death. Read that loop closely: the tokens are the very lifegain that re-arms the creature, so each half supplies the other's fuel. Sacrifice a Pest, gain a life, and the end-step check flips prepared back on, letting you cast another copy of Turn Stones next turn. The metering is that prepared switches off the moment you use it, so the engine ticks one copy per cycle rather than running away; you have to keep the life coming to keep the stones turning. It is a self-sustaining aristocrats seed folded into a single card, wired to the reality that black-green sacrifice decks throw off incidental lifegain as a matter of course. The two faces lock tight: the creature is the trigger, the sorcery is the payoff, and the tokens close the circuit between them, each one both a body and a fresh point of life to re-prime the whole thing.