Black Market

Mana that compounds off death, paid out once a turn at the moment you most want it: this is the design that turned attrition into an asset. Every creature that hits the graveyard, yours or anyone's, ratchets the charge counter higher, and the counters never come off. The genius and the danger both live in that ratchet. Combat-heavy tables, sacrifice loops, and board wipes all feed it, so the longer a game grinds the more absurd the payout becomes, until you are floating a small mountain's worth of black mana at the start of your main phase. The catch mirrors the strength: the mana arrives all at once, on your turn, with nothing to do with it unless you have already built the engine to spend a flood. That timing is the design discipline. This is not ramp you can lean on early; it is a snowball that demands a sink large enough to justify it, so it has always lived alongside expensive payoffs and X-spells rather than curve-toppers. Counters that only accumulate also mean the enchantment cannot be throttled by its controller, only fed, so the resource it generates scales with chaos rather than planning. A patient build-around in the truest sense: the enchantment sits inert while the bodies pile up, then threatens to win the game several turns later, financed entirely by everything that died in between.