Mourning

Cutting a creature's power by two does not kill anything, but the recurring buyback is what changes the math. For a single black mana you can bounce this back to hand at any time, which means it functions less like a permanent debuff and more like a repeatable damage-prevention tool: park it on the biggest attacker to blunt one combat, then pick it up to redeploy on the next threat. The -2/-0 line is deliberately conservative, never touching toughness, so it cannot trade with anything on its own; what it offers instead is the option to soften an attacker every turn without spending a new card. That recursion clause is what justifies the static effect's price. A one-shot -2/-0 aura would be unplayable, but one that floats above the board and returns on command becomes a slow-burn fog you can aim. It is a defensive piece built for grinding stalemates, where shaving damage off the same big creature over many turns adds up to a wall you never have to replace.