Name:Karoo
ManaCost:no cost
Types:Land
K:CARDNAME enters the battlefield tapped.
A:AB$ Mana | Cost$ T | Produced$ C W | SpellDescription$ Add {C}{W} to your mana pool.
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Card.Self | Execute$ TrigSacUnless | TriggerDescription$ When CARDNAME enters the battlefield, sacrifice it unless you return an untapped Plains you control to its owner's hand.
SVar:TrigSacUnless:DB$ Sacrifice | Defined$ Self | UnlessCost$ Return<1/Plains.untapped/untapped Plains> | UnlessPayer$ You
SVar:RemAIDeck:True
SVar:Picture:http://www.wizards.com/global/images/magic/general/karoo.jpg
Oracle:Karoo enters the battlefield tapped.\nWhen Karoo enters the battlefield, sacrifice it unless you return an untapped Plains you control to its owner's hand.\n{T}: Add {C}{W} to your mana pool.