Hydra Trainer

Format legality

Where you can play Hydra Trainer in sanctioned and popular formats.

All printings

Prices range from $0.28 to $0.36 across finishes. Cheapest printing: Modern Horizons 3 at $0.28.

More from Modern Horizons 3

See all 524 cards in Modern Horizons 3 →

Rulings

Official rulings from Wizards of the Coast (7).

• 2024-06-07If an exerted permanent is already untapped during your next untap step (most likely because an effect untapped it), exert's effect preventing it from untapping expires without having done anything.
• 2024-06-07If you gain control of another player's permanent until end of turn and exert it, and then that player regains control of it, it will untap during that player's untap step.
• 2024-06-07You can exert Hydra Trainer 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.
• 2024-06-07You don't choose a target for Hydra Trainer's first ability at the time it triggers. Rather, a second "reflexive" ability triggers when you exert Hydra Trainer this way. You choose a target for that ability as it goes on the stack. Each player may respond to this triggered ability as normal.
• 2024-06-07The value of X is determined only once, as the reflexive triggered ability resolves.
• 2024-06-07You can always activate an ability that will cause a creature to adapt. As that ability resolves, if the creature has a +1/+1 counter on it for any reason, you simply won't put any +1/+1 counters on it.
• 2024-06-07If a creature somehow loses all of its +1/+1 counters, it can adapt again and get more +1/+1 counters.

Frequently asked questions