Soul Transfer

Black rarely gets to exile, and it never gets to exile and rebuy in the same card without paying a tax somewhere. The tax here is a deckbuilding condition rather than a mana premium: the base spell picks one mode, but with both an artifact and enchantment on your side of the board as you cast it, both modes resolve off a single casting. That gates the two-for-one behind a board state most black decks are not naturally building toward, so the double mode functions as a reward for shaping the battlefield rather than a default line. Clean exile is the part that carries the card, since black's usual removal leaves a body in the graveyard or on the battlefield in some diminished form; exiling a creature or planeswalker outright sidesteps recursion, indestructibility, and death triggers alike, effects black has traditionally had to route around rather than answer head-on. Pairing that with graveyard recursion in the split mode makes the card a two-way pivot: interaction when you need to break something up, refueling when you need to rebuild. The permanent-type requirement is a callback to older "if you control X" gating, the design lever that lets a card carry a premium effect at a fair rate as long as the battlefield cooperates. What you get is not a strictly efficient removal spell but a conditional one whose ceiling is high enough to justify building toward the permanents that unlock it.