To resolve Sheoldred's enters-the-battlefield ability in a multiplayer game, the next opponent in turn order (or, if it's an opponent's turn, the opponent whose turn it is) chooses a creature they control to sacrifice
It does cost a bit of mana to cast, but once it's on the battlefield, Lier, Disciple Of The Drowned becomes an instant threat with how much recursion it gives you
For example, if an effect allowed you to search your library for a land card, you could find Jidoor, but if you were searching for a sorcery card, you couldn't find Overture
House, President and CEO Quick view Out of stock $13.99 Out of Stock Mr
Kaldra Compleat provides an expensive way to provide both indestructibility and a host of other keywords, including first strike, trample, and haste