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.
NM-Mint - $13.20
Lightly Played - $12.60
Moderately Played - $11.90
Heavily Played - $10.60
Damaged - $8.60
NM-Mint Non English - $13.20
Lightly Played Non English - $12.60
Moderately Played Non English - $11.90
Heavily Played Non English - $10.60
Damaged Non English - $8.60