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 - £0.20
Lightly Played - £0.20
Moderately Played - £0.20
Heavily Played - £0.10
Damaged - £0.10
Near Mint Non English - £0.20
Lightly Played Non English - £0.20
Moderately Played Non English - £0.20
Heavily Played Non English - £0.10
Damaged Non English - £0.10
Foil Prices
Near Mint Foil - £0.20
Lightly Played Foil - £0.20
Moderately Played Foil - £0.20
Heavily Played Foil - £0.10
Damaged Foil - £0.10
Near Mint Foil Non English - £0.20
Lightly Played Foil Non English - £0.20
Moderately Played Foil Non English - £0.20
Heavily Played Foil Non English - £0.10
Damaged Foil Non English - £0.10