Name:Harvest Wurm
ManaCost:1 G
Types:Creature Wurm
PT:3/2
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Card.Self | Execute$ TrigChangeZone | TriggerDescription$ When CARDNAME enters the battlefield, sacrifice it unless you return a basic land card from your graveyard to your hand.
SVar:TrigChangeZone:AB$ ChangeZone | Cost$ 0 | Origin$ Graveyard | Destination$ Hand | Hidden$ True | ChangeType$ Land.Basic+YouOwn | RememberChanged$ True | SubAbility$ DBSac
SVar:DBSac:DB$ Sacrifice | Cost$ 0 | Defined$ Self | SubAbility$ DBCleanup | ConditionCheckSVar$ X | ConditionSVarCompare$ LT1 | References$ X
SVar:DBCleanup:DB$ Cleanup | ClearRemembered$ True
SVar:X:Remembered$Amount
SVar:NeedsToPlayVar:Y GE1
SVar:Y:Count$TypeInYourYard.Basic
SVar:Picture:http://www.wizards.com/global/images/magic/general/harvest_wurm.jpg
Oracle:When Harvest Wurm enters the battlefield, sacrifice it unless you return a basic land card from your graveyard to your hand.