Cat-Owl

The untap-on-attack trigger is doing something more precise than a vanilla combat bonus: refreshing a target on the swing turns this into a repeatable enabler rather than just a body. Aim it at one of your own mana rocks or dorks and it becomes a soft ritual that pays for itself every combat; direct it at a tapped-out artifact with an activated ability and you buy a second activation each turn you attack. The untap doesn't care who controls the target, but the useful window is your own declare-attackers step, so most lines are proactive: refresh a creature you tapped for a cost earlier in the turn, or hit a fellow attacker to grant pseudo-vigilance, leaving it home to block on the crackback after it swings. The hybrid pip is the accommodation that keeps it fieldable across two colors, letting either a white or a blue deck run it without bending a manabase around the off-color. What makes flying load-bearing here is durability, not damage: the trigger fires on declaration rather than on connection, so a chump block never robs you of the value, but evasion is what lets the body survive combat to keep swinging and keep waking targets up turn after turn. The card asks for nothing more exotic than a board that taps things for output and a target worth untapping; give it that, and each attack step becomes a small engine tick.