Fraying Omnipotence, Ill admit, is a bit of a gamble
Viridian Revel, Disciple of the Vault, Tarrian's Soulcleaver, Pain Distributor, and Sardian Avenger each work with treasures that opponent's use
Clive, Ifrit's Dominant // Ifrit, Warden of Inferno (Extended Art) - Final Fantasy (Near Mint) You want to be informed when the price of Clive, Ifrit's Dominant // Ifrit, Warden of Inferno (Extended Art) - Final Fantasy (Near Mint) reaches a certain value
Not only is the exact placing very subjective but there are a vast number of cards that seem rather hard done by to not be on this list including Sylvan Library, Joraga Treespeaker, Birthing Pod, Rofellos, Natural Order, Wall of Roots, Lotus Cobra and many more
However, if an effect instructs you to search your library for a card with a basic land type, you must search for a land that is a Plains, Island, Swamp, Mountain, or Forest, regardless of whether or not the land is basic