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 - $9.20
Lightly Played - $8.70
Moderately Played - $8.30
Heavily Played - $7.40
Damaged - $6.00
NM-Mint Non English - $9.20
Lightly Played Non English - $8.70
Moderately Played Non English - $8.30
Heavily Played Non English - $7.40
Damaged Non English - $6.00