name: Magnetic Mountain
printings: 3ED, 4BB, 4ED, ARN, FBB, SUM
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 {4} for each creature chosen this way. If the player does, untap those creatures.
type: Enchantment