Gorgon Recluse

Deathtouch before deathtouch had a keyword: the gorgon's stare here is restricted to nonblack creatures, and it triggers on blocking or being blocked rather than on dealing damage, with the kill deferred to end of combat. That timing is the wrinkle worth dwelling on. The destruction fires regardless of whether the gorgon survives the exchange, so blocking a much larger attacker still drags that attacker down at end of combat; the 2/4 body is durable enough to wall most early threats and walk away from the fight while taking its target with it. Pinning the effect to nonblack creatures is the cost: against a mirror of black aggressors the recluse is just a 2/4, which is the concession that pays for an effect that would otherwise read as a roving removal spell on a stick. Madness is the other lever, turning the card from a clunky five-drop into a discard payoff: pitched to a rummaging or looting effect, it comes down for two and immediately starts demanding answers in combat. The split personality is the point. Played fairly it is a defensive five-mana wall that punishes attacks; cast off madness it is a cheap, sticky body that rewards a deck already churning through its hand.