At the beginning of your upkeep, sacrifice Koskun Falls unless you tap an untapped creature you control. Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
Near Mint - $8.00
Lightly Played - $7.50
Moderately Played - $6.50
Heavily Played - $5.25
Damaged - $4.00
Near Mint Non-English - $8.00
Lightly Played Non-English - $7.50
Moderately Played Non-English - $6.50
Heavily Played Non-English - $5.25
Damaged Non-English - $4.00