Name:Helvault
ManaCost:3
Types:Legendary Artifact
A:AB$ ChangeZone | Cost$ 1 T | ValidTgts$ Creature.YouCtrl | Origin$ Battlefield | Destination$ Exile | TgtPrompt$ Select target creature you control | RememberTargets$ True | SpellDescription$ Exile target creature you control.
A:AB$ ChangeZone | Cost$ 7 T | ValidTgts$ Creature.YouDontCtrl | Origin$ Battlefield | Destination$ Exile | TgtPrompt$ Select target creature you don't control | RememberTargets$ True | IsCurse$ True | SpellDescription$ Exile target creature you don't control.

T:Mode$ ChangesZone | Origin$ Exile | Destination$ Any | Static$ True | ValidCard$ Card.IsRemembered+ExiledWithSource | Execute$ DBForget
SVar:DBForget:DB$ Pump | ForgetObjects$ TriggeredCard

T:Mode$ ChangesZone | Origin$ Battlefield | Destination$ Graveyard | ValidCard$ Card.Self | Execute$ TrigReturn | TriggerController$ TriggeredCardController | TriggerDescription$ When CARDNAME is put into a graveyard from the battlefield, return all cards exiled with it to the battlefield under their owners' control.
SVar:TrigReturn:DB$ ChangeZoneAll | ChangeType$ Card.IsRemembered+ExiledWithSource | Origin$ Exile | Destination$ Battlefield | Destination$ Battlefield | SubAbility$ DBCleanup

T:Mode$ ChangesZone | Origin$ Battlefield | Destination$ Any | ExcludedDestinations$ Graveyard | ValidCard$ Card.Self | Execute$ DBCleanup | Static$ True

SVar:DBCleanup:DB$Cleanup | ClearRemembered$ True
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/helvault.jpg
Oracle:{1}, {T}: Exile target creature you control.\n{7}, {T}: Exile target creature you don't control.\nWhen Helvault is put into a graveyard from the battlefield, return all cards exiled with it to the battlefield under their owners' control.