Corpse Traders

Targeted discard is one of black's oldest tools, but stapling it to a creature and a sacrifice cost reshapes the math entirely. Thoughtseize and its kin spend a card from your hand to strip a card from theirs; this body keeps the discard on the table, recurring it every turn that you can spare both a creature to feed it and a sorcery-speed window to act. The friction is real: each activation costs three mana and a creature, and the sorcery-speed restriction means you cannot ambush a key spell off the top or strip a card the moment your opponent draws it. What you get in exchange is repeatability, the thing one-shot discard spells can never offer, turning a board of expendable bodies into a slow grind through an opponent's hand. The sacrifice clause also points it squarely at a death-trigger shell, where the creature you feed it was going to die anyway and the discard is upside layered on top of an aristocrats engine. As a 3/3 it is a fine attacker once the hand is empty, but the body is incidental; the card is a discard engine wearing a creature, and its ceiling is in attrition matchups where running an opponent out of resources, one chosen card at a time, wins the game outright.