Name:Massacre
ManaCost:2 B B
Types:Sorcery
S:Mode$ Continuous | Affected$ Card.Self | EffectZone$ All | AddKeyword$ Alternative Cost:0 | CheckSVar$ X | CheckSecondSVar$ Y | References$ X,Y | Description$ If an opponent controls a Plains and you control a Swamp, you may cast CARDNAME without paying its mana cost.
SVar:X:Count$Valid Plains.OppCtrl
SVar:Y:Count$Valid Swamp.YouCtrl
A:SP$ PumpAll | Cost$ 2 B B | ValidCards$ Creature | NumAtt$ -2 | NumDef$ -2 | IsCurse$ True | SpellDescription$ All creatures get -2/-2 until end of turn.
SVar:Picture:http://www.wizards.com/global/images/magic/general/massacre.jpg
Oracle:If an opponent controls a Plains and you control a Swamp, you may cast Massacre without paying its mana cost.\nAll creatures get -2/-2 until end of turn.