Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)
As long as Stern Mentor is paired with another creature, each of those creatures has "{T}: Target player puts the top two cards of their library into their graveyard."
Near Mint - $0.10
Near Mint Non-English - $0.10
Lightly Played - $0.10
Lightly Played Non-English - $0.10
Played - $0.10
Played Non-English - $0.10
Heavily Played - $0.10
Heavily Played Non-English - $0.10
Damaged - $0.10
Damaged Non-English - $0.10
Foil Prices
Near Mint Foil - $0.40
Near Mint Foil Non-English - $0.40
Lightly Played Foil - $0.40
Lightly Played Foil Non-English - $0.40
Played Foil - $0.30
Played Foil Non-English - $0.30
Heavily Played Foil - $0.30
Heavily Played Foil Non-English - $0.30
Damaged Foil - $0.20
Damaged Foil Non-English - $0.20