Skeletal Kathari

Regeneration as a keyword has aged out of design, but it once filled a specific need: a way to let a creature survive removal at a price you paid in resources rather than by leaving it home on defense. Here the bill is steep enough that the ability reads as insurance, not an engine. You shrug off combat or a kill spell for one black mana and a sacrificed creature, which means the Kathari only stays alive when there is always cheaper, more expendable fodder to feed it. That double price defines how it plays: regenerate when you must, not for value. The Bird Skeleton typing points to its natural home, a shell that chews through small creatures and treats its own graveyard as a staging area rather than a loss column. As a 3/2 flier for five, it does honest evasive work, and the sacrifice clause lets it walk through a board wipe so long as you have a spare body and the mana to spend. Strip away the sacrifice support, though, and the regeneration sits idle: a defensive button you rarely have the inputs to press.