When Trial of Knowledge enters, draw three cards, then discard a card. When a Cartouche you control enters, return Trial of Knowledge to its owner's hand.
NM-Mint - $0.30
Lightly Played - $0.30
Moderately Played - $0.20
Heavily Played - $0.20
Damaged - $0.20
NM-Mint Non English - $0.30
Lightly Played Non English - $0.30
Moderately Played Non English - $0.20
Heavily Played Non English - $0.20
Damaged Non English - $0.20