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 - $0.40
Near Mint Non-English - $0.40
Lightly Played - $0.40
Lightly Played Non-English - $0.40
Played - $0.30
Played Non-English - $0.30
Heavily Played - $0.30
Heavily Played Non-English - $0.30
Damaged - $0.20
Damaged Non-English - $0.20
Foil Prices
Near Mint Foil - $1.30
Near Mint Foil Non-English - $1.30
Lightly Played Foil - $1.20
Lightly Played Foil Non-English - $1.20
Played Foil - $0.90
Played Foil Non-English - $0.90
Heavily Played Foil - $0.80
Heavily Played Foil Non-English - $0.80
Damaged Foil - $0.70
Damaged Foil Non-English - $0.70