Macabrus, Beyond Bone

Skeletal Descend{I}(if you have ten or more skeleton creature cards in your graveyard, you get the underworld’s fury for the rest of the game) Each Skeleton creature card in your graveyard has Dredge X, where X is their mana cost. Whenever one or more skeleton creature cards leave your graveyard, create a 1/1 black skeleton creature token with “{B}: regenerate this creature.” If you have the underworld’s fury, create two of those tokens instead.