name: Oath of Mages
originalText: During each player's upkeep, if that player has less life than target opponent, he or she may have Oath of Mages deal 1 damage to that opponent.
printings: EXO
text: At the beginning of each player's upkeep, that player chooses target player who has more life than they do and is their opponent. The first player may have Oath of Mages deal 1 damage to the second player.