Necrotic Fumes

Unconditional exile is the cleanest removal black gets, so the color has always had to pay for it somewhere other than the mana cost. Here the toll is a creature of your own, exiled outright as you cast. That structure turns a premium answer into a resource conversion: you spend a body you control to remove any creature or planeswalker your opponent has, with none of the usual black caveats about regeneration, indestructibility, death triggers, or graveyard recursion. Both halves exile, and that matters on the offensive side too, since it slips under an opponent's reanimation plan by putting their threat somewhere no reanimation spell can reach. The tension is entirely in the additional cost. With an empty board you cannot cast it at all; cast it holding a token, a spent value creature, or something already marked for death, and you have laid a clean answer at a discount you paid in advance. That is the discipline the card runs on: it asks you to have already gotten your money's worth from a creature before you feed it to the spell, and it takes that creature to exile rather than the graveyard, so the fodder you pay is fodder you give up entirely. Because it waits outside the deck until a tutor calls it, the additional cost is rarely a surprise: you fetch it once the board has already produced something worth trading away.