Magnetic Mountain

Enchantment, 1RR (3)
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 he or she controls and pay {4} for each creature chosen this way. If the player does, untap those creatures.¹
Illus. Susan Van Camp

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (3/16)	Fourth Edition (Rare) Revised Edition (Rare) Arabian Nights (Uncommon)