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 - $0.10
Lightly Played - $0.10
Moderately Played - $0.10
Heavily Played - $0.10
Damaged - $0.10
NM-Mint Non English - $0.10
Lightly Played Non English - $0.10
Moderately Played Non English - $0.10
Heavily Played Non English - $0.10
Damaged Non English - $0.10