Name:Doomsday
ManaCost:B B B
Types:Sorcery
A:SP$ ChangeZone | Cost$ B B B | Origin$ Graveyard,Library | Destination$ Library | ChangeType$ Card | ChangeNum$ 5 | SubAbility$ DBChangeZone | RememberChanged$ True | SpellDescription$ Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.
SVar:DBChangeZone:DB$ ChangeZoneAll | Defined$ You | Origin$ Graveyard,Library | Destination$ Exile | ChangeType$ Card.IsNotRemembered | SubAbility$ DBDig
SVar:DBDig:DB$ Dig | DigNum$ X | DestinationZone$ Library | LibraryPosition$ 0 | SubAbility$ DBLoseLife | References$ X
SVar:DBLoseLife:DB$ LoseLife | LifeAmount$ Y | References$ Y | SubAbility$ DBCleanup
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:X:Count$InYourLibrary
SVar:Y:Count$YourLifeTotal/HalfUp
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/doomsday.jpg
Oracle:Search your library and graveyard for five cards and exile the rest. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.