Name:Nemesis Trap
ManaCost:4 B B
Types:Instant Trap
A:SP$ ChangeZone | Cost$ 4 B B | ValidTgts$ Creature.attacking | TgtPrompt$ Select target attacking creature | Origin$ Battlefield | Destination$ Exile | SubAbility$ NemesisToken | SpellDescription$ Exile target attacking creature. Create a token that's a copy of that creature. Exile it at the beginning of the next end step.
A:SP$ ChangeZone | Cost$ B B | ValidTgts$ Creature.attacking | TgtPrompt$ Select target attacking creature | Origin$ Battlefield | Destination$ Exile | SubAbility$ NemesisToken | IsPresent$ Creature.White+attacking | SpellDescription$ If a white creature is attacking, you may pay {B}{B} rather than pay CARDNAME's mana cost.
SVar:NemesisToken:DB$ CopyPermanent | Defined$ Targeted | AtEOT$ Exile
SVar:Picture:http://www.wizards.com/global/images/magic/general/nemesis_trap.jpg
Oracle:If a white creature is attacking, you may pay {B}{B} rather than pay Nemesis Trap's mana cost.\nExile target attacking creature. Create a token that's a copy of that creature. Exile it at the beginning of the next end step.