Name:Withering Wisps
ManaCost:1 B B
Types:Enchantment
T:Mode$ Phase | Phase$ End of Turn | TriggerZones$ Battlefield | IsPresent$ Creature | PresentCompare$ EQ0 | Execute$ TrigSac | TriggerDescription$ At the beginning of the end step, if no creatures are on the battlefield, sacrifice CARDNAME.
SVar:TrigSac:AB$Sacrifice | Cost$ 0 | Defined$ Self
A:AB$ DamageAll | Cost$ B | NumDmg$ 1 | ValidCards$ Creature | ValidPlayers$ Player | ValidDescription$ each creature and each player. | ActivationLimit$ X | References$ X | SpellDescription$ CARDNAME deals 1 damage to each creature and each player. Activate this ability no more times each turn than the number of snow Swamps you control.
SVar:X:Count$Valid Swamp.Snow+YouCtrl
SVar:NeedsToPlay:Creature
SVar:RemRandomDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/withering_wisps.jpg
Oracle:At the beginning of the end step, if no creatures are on the battlefield, sacrifice Withering Wisps.\n{B}: Withering Wisps deals 1 damage to each creature and each player. Activate this ability no more times each turn than the number of snow Swamps you control.