The cycle of Ravnica Block common "bounce lands" that tap for two color-combination mana, but when they come into play, you must return a different land card you control to your hand. The already existing cards are: Selesnya Sanctuary, Dimir Aqueduct, Golgari Rot Farm, Boros Garrison, Gruul Turf, Izzet Boilerworks, and Orzhov Basilica. The last three have yet to be released in Dissension. They are named after the card Karoo. [ edit][ edit