Name
Magnetic Mountain
Set Name
Revised Edition
Set Type
Core
Mana
Type Line
Enchantment
Rarity
Rare
Oracle Text
Blue creatures don't untap during their controllers' untap steps. At 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.