Lair
Lair is a nonbasic land type used for cards that depict a secluded resting place for wild creatures. The type was created in Planeshift for the the base of operations for the legendary Primeval Dragons from the expansion Invasion.
Each of these uncommon triple lands must be sacrificed when it comes into play unless you return a non-Lair land to your hand and can be tapped for one mana of any of three colors:
- Treva's Ruins (//)
- Dromar's Cavern (//)
- Crosis's Catacombs (//)
- Darigaaz's Caldera (//)
- Rith's Grove (//)