Dauntless Aven

The untap trigger fires on attack, which means the body and the ability point in opposite directions: a 2/1 flier wants to be swinging, but the most efficient untap targets are creatures that would rather sit back. That tension is the design hook. The cleanest payoff is a creature carrying a tap-to-activate ability, so committing this Bird to combat refreshes a mana dork, a pinger, or a tapper while the white evasion clock keeps ticking. It can also untap a blocker the turn you swing, letting one creature both pressure and defend across a single combat. The friction is that the trigger demands a target and the body is fragile, so it asks for a board built around creatures worth untapping rather than rewarding a curve of vanilla beaters. Plenty of white commons have offered evasion-plus-rider in this slot, but the untap clause is the unusual part: most attack triggers add damage, pump, or card flow, while this one hands you a second activation of a creature you already control. That makes it a connective piece more than a threat, the kind of card whose value scales entirely with the tappable creatures standing next to it.