Mono Black Aggro is a fast, grindy deck with Bloodghast recursion and Baron Helmut Zemo value, so Unlicensed Hearse is excellent for permanently answering Bloodghast's graveyard recursion by exiling it. Aven Interrupter flies over their ground creatures and exiles their best spell, like Gray Merchant of Asphodel or Sheoldred, the Apocalypse, taxing it if recast. Archon of Emeria does little against a deck that's not casting many spells per turn and doesn't stop their card advantage engines, while Thalia dies to their removal suite (Fatal Push, Bitter Triumph) too easily to matter, so both trim for graveyard hate and flash disruption. Keep Skyclave Apparition in to answer Baron Helmut Zemo or Bloodghast; it can't hit Overlord of the Balemurk, whose mana value of 5 is too high.