When Cloister Gargoyle enters the battlefield, venture into the dungeon. (Enter the first room or advance to the next room.) As long as you've completed a dungeon, Cloister Gargoyle gets +3/+0 and has flying.
Near Mint - $0.50
Lightly Played - $0.47
Moderately Played - $0.40
Heavily Played - $0.30
Damaged - $0.25
Near Mint Non-English - $0.50
Lightly Played Non-English - $0.47
Moderately Played Non-English - $0.40
Heavily Played Non-English - $0.30
Damaged Non-English - $0.25