Name:Nightmare Incursion
ManaCost:5 B
Types:Sorcery
A:SP$ ChangeZone | Cost$ 5 B | Origin$ Library | Destination$ Exile | ValidTgts$ Player | ChangeType$ Card | ChangeNum$ X | References$ X | IsCurse$ True | Shuffle$ True | SpellDescription$ Search target player's library for up to X cards, where X is the number of Swamps you control, and exile them. Then that player shuffles his or her library.
SVar:X:Count$Valid Swamp.YouCtrl
SVar:Picture:http://www.wizards.com/global/images/magic/general/nightmare_incursion.jpg
Oracle:Search target player's library for up to X cards, where X is the number of Swamps you control, and exile them. Then that player shuffles his or her library.