When Sparring Regimen enters the battlefield, learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.) Whenever you attack, put a +1/+1 counter on target attacking creature and untap it.
Near Mint - $400
Lightly Played - $300
Moderately Played - $300
Heavily Played - $300
Damaged - $200
Near Mint Spanish - $400
Lightly Played Spanish - $300
Moderately Played Spanish - $300
Heavily Played Spanish - $300
Damaged Spanish - $200
Foil Prices
Near Mint Foil - $400
Lightly Played Foil - $400
Moderately Played Foil - $300
Heavily Played Foil - $300
Damaged Foil - $200
Near Mint Foil Spanish - $400
Lightly Played Foil Spanish - $400
Moderately Played Foil Spanish - $300
Heavily Played Foil Spanish - $300
Damaged Foil Spanish - $200