Hydra Trainer - Modern Horizons 3 - 159

Creature — Human Warrior

Mana Cost: {1}{G}

You may exert this creature as it attacks. When you do, target creature gets +X/+X until end of turn, where X is the number of counters on permanents you control. (An exerted creature won't untap during your next untap step.)
{2}{G}: Adapt 2. (If this creature has no +1/+1 counters on it, put two +1/+1 counters on it.)

P/T: 1/1

Uncommon · Modern Horizons 3 · #159 (MH3)

Illustrated by Ryan Pancoast