Up for sale is the confusing Ambiguity, a rare card from the Unhinged expansion of Magic: the Gathering. This is the Foil, silver-bordered, English version.
Ambiguity: Enchantment; whenever a player plays a Spell that counters a Spell that has been played or a player plays a Spell that comes into play with counters, that player may counter the next Spell played or put an additional counter on a Permanent that has already been played, but not countered; casting cost 2UU.
These cards are at least in Very Fine condition, with most being in Near Mint or better condition.