Mistmeadow Vanisher

Blink effects usually charge you every time: an activated ability with a mana cost, or a fresh spell cast to reset the same enters-the-battlefield trigger. Here the flicker is bolted to tapping, which converts every attack, every convoke payment, every tap-to-activate cost into a free exile-and-return of any nonland, nontoken permanent on the board. Attack and you can exile an opposing blocker for the turn, blink your own creature to reload its enters-the-battlefield value, or return a planeswalker fresh to reset its loyalty. The flexibility cuts both ways: "up to one target" means the trigger never strands you when there's nothing worth flickering, and the return being delayed to end of turn (rather than immediate) is what stops the card from working as a repeatable permanent-removal engine. The 3/2 body already wants to attack, so the tap condition reads less like a cost than a consequence of doing what the card does anyway. The reason it's worth building around is that the trigger is engine-agnostic: any repeatable way to tap it (a tapper, a vehicle to crew, an untap-retap loop) becomes repeatable flicker, and the card is indifferent to whether the payoff comes from blinking your own permanents for value or exiling theirs for tempo.