Infectious Rage

Most auras are removal liabilities: invest two mana, get blown out by a single kill spell, and your card is gone with the creature. This one refuses to die with its host. When the enchanted creature dies, the aura reattaches itself, at random, to another legal creature on the battlefield. The +2/-1 is the catch: it pumps as much as it shrinks, so it can never be a clean Pacifism for the opponent's board, and the random selection means it might just as easily reattach to your own attacker as to an enemy blocker. That randomness is the whole mechanism, and it cuts in a way the rate alone does not advertise. On a board where your opponent controls more creatures than you, the math favors the aura drifting onto their side and trimming their toughness; on a board where you have the bodies, it can come home and buff your own. The effect rewards engineering the population of legal targets rather than choosing one, a planning problem most auras never pose because they simply stay put. It is a curio built around a death trigger that turns an aura into something closer to a recurring, uncontrollable contagion: it keeps coming back, but you do not get to aim it.