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 - $11.40
Lightly Played - $10.80
Moderately Played - $10.20
Heavily Played - $9.10
Damaged - $7.40
NM-Mint Non English - $11.40
Lightly Played Non English - $10.80
Moderately Played Non English - $10.20
Heavily Played Non English - $9.10
Damaged Non English - $7.40