AKHAmonkhet

Trueheart Twins

Trueheart Twins from Amonkhet
Trueheart Twins from Amonkhet

Creature - Jackal Warrior   {4}{R} (CMC:5)

You may exert Trueheart Twins as it attacks. (It won't untap during your next untap step.) Whenever you exert a creature, creatures you control get +1/+0 until end of turn.

Shoulder to shoulder until blade must turn against blade.

153 AKH • ENMatt Stewart

Notes: TODO: Update Copyright

Legal in: Modern,Legacy,Vintage,Commander

Oracle Text (click to copy):

View this MTG card on Gatherer
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. 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.
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
Some cards have abilities that trigger whenever you exert any creature. These abilities trigger when you exert that creature or any other creature you control.

Card Trueheart Twins is not on TCGPlayer.