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 - $12.30
Lightly Played - $11.70
Moderately Played - $11.10
Heavily Played - $9.90
Damaged - $8.00
NM-Mint Non English - $12.30
Lightly Played Non English - $11.70
Moderately Played Non English - $11.10
Heavily Played Non English - $9.90
Damaged Non English - $8.00