Fists of the Demigod

This Aura reads the color of the creature it sits on and pays out a different keyword for each half: on a black body, wither turns combat damage into permanent -1/-1 counters; on a red body, first strike means the +1/+1 bump connects before any blocker can swing back. A creature that is black and red collects both clauses at once, and that overlap is the whole steering. The card is castable off either pip, but it actively wants the body underneath to belong to both colors, stacking first strike onto wither so the enchanted creature strikes early and deals its damage as counters that never wash off. The payoff is a small piece doing genuinely lopsided work in combat: every block becomes a losing trade against a body that hits first and shrinks whatever it touches. The cost is the standard Aura tax, a two-card investment that a single removal spell evaporates, and a reward that only fires for the right colors, so on a creature that is neither black nor red the text does nothing at all. The design lives or dies on whether you can reliably field a creature that satisfies both clauses, which is exactly the deckbuilding pull toward a mono-guild board the card was built to encourage.