Name:Dromar's Cavern
ManaCost:no cost
Types:Land Lair
A:AB$ Mana | Cost$ T | Produced$ Combo W U B | SpellDescription$ Add {W}, {U}, or {B}.
T:Mode$ ChangesZone | Origin$ Any | Destination$ Battlefield | ValidCard$ Card.Self | Execute$ TrigSacUnless | TriggerDescription$ When CARDNAME enters, sacrifice it unless you return a non-Lair land you control to its owner's hand.
SVar:TrigSacUnless:DB$ Sacrifice | UnlessCost$ Return<1/Land.nonLair/non-Lair land> | UnlessPayer$ You
SVar:NeedsToPlay:Land.nonLair+YouCtrl
Oracle:When Dromar's Cavern enters, sacrifice it unless you return a non-Lair land you control to its owner's hand.\n{T}: Add {W}, {U}, or {B}.
