Wayta, Trainer Prodigy

Most fight commanders treat the ability as green removal that happens to cost a creature some life; this one treats the damage your own creatures absorb as the resource being farmed. The doubling clause does the real work: whenever damage dealt to one of your creatures would trigger a permanent you control, that trigger fires an additional time, and a fight deals damage in both directions. So each fight becomes a double pull on anything keyed to your creatures taking damage: bodies that grow when hurt, permanents that punish combat, engines built around noncombat harm. The cost reduction, cheaper when both fighting creatures are yours, is the tell. It nudges the deck away from using fights as a removal outlet and toward self-inflicted fights, where your own board is the machine and the return damage is the point rather than the risk. The 1/5 frame reads like a weak attacker, but Wayta was never meant to swing; the toughness lets her survive when she is one of the two creatures fighting, which is often, since pointing her at your own board is the cheapest way to farm triggers. Haste means the fight ability comes online the turn she lands. Every piece here (the reduced cost, the durable body, the speed) exists to keep the doubling clause fed, and the unusual axis is that the harm you inflict on yourself is the engine's fuel.