I figured I would still list one of the better deals for Magic players because it is very rare to find magic cards at a discounted price from a retail store.
Barnes and Nobel has Magic the gathering products that are eligible for 50% off using the http://www.barnesandno
I bought a Scars of Mirrodin fat pack for $18 after applying the coupon. There were several other magic products at my store to choose from and I'm sure the coupon would work for any of them. The MTG Cards are near the board games.