Defiling Tears

Three riders, one creature, one turn, and the regeneration grant is the part doing the heavy lifting. At instant speed you can flash this in response to removal or a combat block and keep alive a creature with no defenses of its own, then pay a black mana per save for the rest of the turn: a survival tool wearing the costume of a pump spell. The -1 toughness is the cost that keeps the regeneration from being a freeroll. You cannot bolt it to a fragile body without doing part of the opponent's work for them, so the card pushes you toward a creature sturdy enough to absorb the shrink and bank the upside. The +1 power, meanwhile, can eke out a little extra damage, or, paired with the same -1, swing a trade you would otherwise lose. Recoloring the target to black is a quieter rider, but it matters wherever color is a switch: it can let your attacker slip past a blocker with protection from white, or set up a black-matters sacrifice or pump effect later in the turn. The design reflects an older instinct for grant-a-keyword instants that prized flexibility over raw rate, built for a player reading the combat math a step or two before the opponent commits, where the bluff of a trick and the reality of a regeneration shield live in the same card.