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 - $16.60
Lightly Played - $14.90
Played - $11.60
Heavily Played - $10.00
Damaged - $8.30
Near Mint Non-English - $16.60
Lightly Played Non-English - $14.90
Played Non-English - $11.60
Heavily Played Non-English - $10.00
Damaged Non-English - $8.30