Druid of Horns

Aura-matters payoffs usually live in white or blue, where the enchantments are flashy buffs and the bodies wearing them are throwaway threats. Here the reward is structural: every Aura you cast targeting this Druid hands you a 3/3 Beast, which means you are never fully exposed to the oldest tax on Aura strategies in Magic, the two-for-one removal spell that eats creature and enchantment together. Each Aura builds a board even as it builds a single threat, so the trade math that normally punishes the strategy gets inverted. The trigger cares only that you are casting an Aura that targets this creature, not what the Aura does, which quietly opens the door to playing Auras for their token value rather than their stated effect: a pump spell, a protective ward, or any Aura that would otherwise be marginal becomes a Beast on cast. Note that the trigger keys off your own casts, so an opponent's disabling Aura pointed at the Druid does nothing for you; the reward is strictly yours to earn. The 2/3 body is a deliberate brake. It survives the small ping that would otherwise blank the whole engine before you assemble it, but it is too small to win on its own, forcing the deck to commit Auras to keep the Beasts coming. That is the bargain this kind of green payoff makes: a token factory that only runs while you keep feeding it enchantments, in a color rarely trusted with the Aura subtheme at all.