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 - $8.75
Lightly Played - $8.25
Moderately Played - $6.50
Heavily Played - $5.25
Damaged - $3.50
Near Mint Non-English - $8.75
Lightly Played Non-English - $8.25
Moderately Played Non-English - $6.50
Heavily Played Non-English - $5.25
Damaged Non-English - $3.50