Aspect of Gorgon

The toughness is where this aura earns its keep. Auras that grant deathtouch are usually weighted toward power, the implicit promise being that you trade up when you swing in; this one loads three points onto the back instead, and the math behind that split is the whole point. Deathtouch makes a creature's power functionally infinite for the purpose of killing what it touches, so the lone point of power is close to dead weight on offense. The toughness is what matters: it lets the enchanted creature block a real attacker, kill it, and walk away from the exchange. Cast at sorcery speed before combat, the result is a body that wants to block: a deathtouch wall that grows by three toughness becomes a tax on the opponent's entire ground assault, threatening to eat anything that swings into it. The design also quietly answers an aura's worst structural flaw, the two-for-one when your investment dies, by routing the power into survivability; the creature is hard to remove in combat by construction rather than by chance. The lineage runs back through black's long marriage of deathtouch to a defensive shell, and the deal it offers is honest: pay a card and three mana to convert any creature into a roadblock that punishes attacks, with the durability written into the stat line instead of promised by the keyword alone.