You may exert Hydra Trainer 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.)
Near Mint - $100
Lightly Played - $100
Moderately Played - $100
Heavily Played - $100
Damaged - $100
Near Mint Spanish - $100
Lightly Played Spanish - $100
Moderately Played Spanish - $100
Heavily Played Spanish - $100
Damaged Spanish - $100
Foil Prices
Near Mint Foil - $100
Lightly Played Foil - $100
Moderately Played Foil - $100
Heavily Played Foil - $100
Damaged Foil - $100
Near Mint Foil Spanish - $100
Lightly Played Foil Spanish - $100
Moderately Played Foil Spanish - $100
Heavily Played Foil Spanish - $100
Damaged Foil Spanish - $100