Oath of Lieges | Magic: The Gathering
Formats Oath of Lieges is Legal in
Official Oracle Text for Oath of Lieges
Official Rulings for Oath of Lieges
10/4/2004 : Because the "search" requires you to find a card with certain characteristics, you don't have to find the card if you don't want to.
8/1/2008 : Shuffling the library is part of the optional effect. The player only shuffles if he or she chose to search.
10/1/2009 : The ability can only target an opponent of the current player.
10/1/2009 : The targeted player controlling more lands than the current player is a part of the targeting requirement. A player can't be targeted by this ability unless it's true, and the ability will be countered on resolution if it's no longer true at that time.