Up for sale is the locking Amber Prison, a rare card from the Mirage expansion of Magic: the Gathering. These are the original, black-bordered, English version.
Amber Prison: Artifact; you may choose not to untap Amber Prison during your untap step; spend 4 mana and tap Amber Prison to tap target Artifact, Creature, or Land; as long as Amber Prison remains tapped, that Permanent doesn't untap during its controller's untap step; casting cost 4.
These cards are in at least Very Fine condition, with most being in Near Mint or better condition.
