Magnetic Mountain [Arabian Nights]Set: Arabian Nights Type: Enchantment Rarity: Uncommon Cost: {1}{R}{R} 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.

target player skips their next untap step

and madness has given it form

Set: Diamond & Pearl: Stormfront Type: Metal Rarity: Uncommon Retreat cost: Colorless

Set: World Championships 2009 Type: Darkness Rarity: Uncommon Retreat cost: Colorless[-20]

the charms of surface dwellers are quite useless

Set: Black & White: Base Set Type: Fire Rarity: Uncommon Retreat cost: Colorless

that player sacrifices a monocolored creature

Set: Platinum: Arceus Type: Metal Rarity: Rare Retreat cost: Colorless

{T}: Exile target attacking creature an opponent controls

final entry

For each creature exiled this way

Set: Expedition: Base Set Type: Lightning Rarity: Common