Ulvenwald Hydra's power and toughness are each equal to the number of lands you control.
When Ulvenwald Hydra enters the battlefield, you may search your library for a land card, put it onto the battlefield tapped, then shuffle your library.
Near Mint - $300
Lightly Played - $200
Moderately Played - $200
Heavily Played - $200
Damaged - $200
Near Mint Spanish - $300
Lightly Played Spanish - $200
Moderately Played Spanish - $200
Heavily Played Spanish - $200
Damaged Spanish - $200