Sanctum of Ugin [Battle for Zendikar Promos]

Set: Battle for Zendikar Promos Type: Land Rarity: Rare Cost: {T}: Add {C}. Whenever you cast a colorless spell with converted mana cost 7 or greater, you may sacrifice Sanctum of Ugin. If you do, search your library for a colorless creature card, reveal it, put it into your hand, then shuffle your library.