Dark Dabbling

Regeneration stapled to a cantrip is the stabilizing math fair black decks have always wanted: protect your creature, replace the card, break even. The base mode is a combat trick that refuses to be a dead draw, since rescuing one creature still puts a card back in hand. What pushes it past the usual single-target shield is the spell mastery clause, which extends the regeneration to your whole board once your graveyard holds two instants or sorceries. That threshold reframes the card. It punishes a one-card sweeper or an overextended block by quietly insuring your entire team, and the cost of unlocking it is precisely the cheap spellslinging a deck running this is already doing. The timing is the sharpest part: held up at instant speed, it sits behind your attack or under their removal, and each creature walks away with a fresh shield against the next destruction this turn. The honest limit is structural in two directions. The protection is one-use per creature: a regeneration shield is spent the first time it would stop a destruction, so a single cast does not blank a chain of removal, it absorbs one event apiece. And regeneration only answers destruction, so exile, bounce, sacrifice, and minus-toughness all walk straight through it. Against the right removal it is just a cantrip; in the matchups where destruction is the threat, it is one-card insurance for the board that also refills your hand.