name: Thelon's Curse
originalText: Blue creatures do not untap as normal during their controller's untap phase. During his or her upkeep, a blue creature's controller may pay an additional o\nU to untap it. Each creature may be untapped in this way only once per turn.
printings: FEM
text: Blue creatures don't untap during their controllers' untap steps.\nAt the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {U} for each creature chosen this way. If the player does, untap those creatures.