
At the beginning of each player's upkeep, that player chooses target player who controls more lands than they do and is their opponent. The first player may search their library for a basic land card, put that card onto the battlefield, then shuffle.
Oath of Lieges has 2 printings, first in Exodus (1998). EDHREC ranks it #12,719 among Commander cards. It appears most in Phelddagrif decks (269 on EDHREC). It has 5 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.