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 - $13.10
Lightly Played - $11.80
Played - $9.20
Heavily Played - $7.90
Damaged - $6.60
Near Mint Non-English - $13.10
Lightly Played Non-English - $11.80
Played Non-English - $9.20
Heavily Played Non-English - $7.90
Damaged Non-English - $6.60