Name:War Cadence
ManaCost:2 R
Types:Enchantment
A:AB$ StoreSVar | Cost$ X R | SVar$ PaidNum | Type$ Count | Expression$ xPaid | SubAbility$ CadenceEffect | AILogic$ RestrictBlocking | SpellDescription$ This turn, creatures can't block unless their controller pays {X} for each blocking creature he or she controls.
SVar:CadenceEffect:DB$ Effect | StaticAbilities$ CadenceStaticAb | SVars$ PaidNum | Stackable$ False | RememberObjects$ Valid Creature.blocking
SVar:CadenceStaticAb:Mode$ CantBlockUnless | ValidCard$ Card.IsNotRemembered | Cost$ PaidNum | References$ PaidNum | EffectZone$ Command | Description$ This turn, creatures can't block unless their controller pays {X} for each blocking creature he or she controls.
# According to the 10/4/2004 ruling: The ability only applies to blocks declared after it resolves. It will not add costs to any blockers already announced.
SVar:X:Count$xPaid
SVar:PaidNum:Number$0
SVar:NonStackingEffect:True
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/war_cadence.jpg
Oracle:{X}{R}: This turn, creatures can't block unless their controller pays {X} for each blocking creature he or she controls.