Oracle

Creature - Human Warrior 4 / 4

You may exert Ahn-Crop Champion as it attacks. When you do, untap all other creatures you control. (An exerted creature won't untap during your next untap step.)

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

4/18/2017
All attackers are chosen at once. You can’t attack with Ahn-Crop Champion, untap a tapped creature, and then attack with that creature.

4/18/2017
Untapping an attacking creature doesn’t remove it from combat.

4/18/2017
If you attack with two Ahn-Crop Champions and exert both, each will untap the other.

4/18/2017
You can’t exert a creature unless an effect allows you to do so. Similar effects that “tap and freeze” a creature (such as that of Decision Paralysis) don’t exert that creature.

4/18/2017
If an exerted creature is already untapped during your next untap step (most likely because it had vigilance or an effect untapped it), exert’s effect preventing it from untapping expires without having done anything.

4/18/2017
If you gain control of another player’s creature until end of turn and exert it, it will untap during that player’s untap step.

4/18/2017
All cards in the Amonkhet set that let you exert a creature let you do so as you declare it as an attacking creature, as do some of the cards in the Hour of Devastation set. You can’t do so later in combat, and creatures put onto the battlefield attacking can’t be exerted. Any abilities that trigger on exerting an attacking creature will resolve before blockers are declared.

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