You may exert Champion of Rhonas as it attacks. When you do, you may put a creature card from your hand onto the battlefield. (An exerted creature won't untap during your next untap step.)
The only way to finish the Trial of Strength is with a basilisk scale in hand.
Near Mint - $0.10
Lightly Played - $0.10
Moderately Played - $0.10
Heavily Played - $0.10
Damaged - $0.10
Near Mint Spanish - $0.10
Lightly Played Spanish - $0.10
Moderately Played Spanish - $0.10
Heavily Played Spanish - $0.10
Damaged Spanish - $0.10
Foil Prices
Near Mint Foil - $0.50
Lightly Played Foil - $0.40
Moderately Played Foil - $0.40
Heavily Played Foil - $0.30
Damaged Foil - $0.30
Near Mint Foil Spanish - $0.50
Lightly Played Foil Spanish - $0.40
Moderately Played Foil Spanish - $0.40
Heavily Played Foil Spanish - $0.30
Damaged Foil Spanish - $0.30