Dauthi Voidwalker

Most graveyard hate is a dead draw against decks that never fill their yards, which is why this piece of shadow-era Dauthi revival is built to attack whether the disruption matters or not. The shadow keyword makes the 3/2 an evasive clock: only other shadow creatures can meet it in combat, and printings of those are vanishingly rare, so it usually connects unimpeded. Behind the beatdown sits the actual mechanism, a passive replacement effect that reroutes every card headed for an opponent's graveyard into exile under a void counter instead. Reanimation, flashback, escape, delve, and every recursion engine that mines the yard for value goes cold, and nothing needs to be activated to make it happen. The sacrifice ability flips warden into burglar: crack the creature to cast one of those confiscated cards for free, so an opponent stuffing their graveyard is really just building your menu. That is the elegance of the design. The answer never idles, because it is also the threat, and it forces the opponent to solve two problems simultaneously: outrace an evasive body they can barely block, or keep feeding a growing pool of their own best cards into your hands.