Unscrupulous Agent
Hand disruption on a body is an old tension for black, and the design keeps circling one question: how much do you charge for stapling a discard effect to a creature that stays on the board? This resolves it by making the disruption exile, not discard, which quietly matters more than the rate suggests. A discarded card can be flashed back, dredged, escaped, or reanimated; a card exiled from hand is gone, closing the recursion loops that make graveyard-forward decks tick. The opponent chooses what to pitch, so it will not surgically pull the one answer you fear, but it does tax the hand while a 1/1 sits down to trade or chump. That last part is the point of putting it on a creature rather than a spell: the effect can be blinked, reanimated, or bounced and recast, turning a one-shot piece of disruption into a repeatable tax in any deck built to flicker enters-the-battlefield triggers. The body is negligible; the value is in the reusable exile clause and the fact that it advances the board while it strips resources, something a raw discard spell never does.
