Amber Prison [Mirage]Set: Mirage Type: Artifact Rarity: Rare Cost: {4} You may choose not to untap Amber Prison during your untap step. {4}, {T}: Tap target artifact, creature, or land. That permanent doesn't untap during its controller's untap step for as long as Amber Prison remains tapped.

then choose an instant or sorcery card in your graveyard

Set: World Championships 2011 Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

Set: EX: Ruby & Sapphire Type: Item Rarity: Uncommon

Set: Diamond & Pearl: Secret Wonders Type: Lightning Rarity: Promo Retreat cost: Colorless

Set: Sun & Moon: Lost Thunder Type: Fire Rarity: Secret Rare Retreat cost: Colorless

Set: Sun & Moon: Cosmic Eclipse Type: Colorless Rarity: Ultra Rare Retreat cost: Colorless

Set: Expedition: Base Set Type: Item Rarity: Common

{T}: Tap enchanted creature

and the Unbeholden

Set: EX: Ruby & Sapphire Type: Metal Rarity: Holo Rare Retreat cost: Colorless

Set: XY: Trainer Kit 1 - Bisharp Type: Supporter Rarity: Promo

Set: Sun & Moon: Team Up Type: Fire Rarity: Common Retreat cost: Colorless