A Basic Pokemon Card of type Psychic with the title Unown [J] and 40 HP of rarity Promo from the set Wizards Black Star Promos and the flavor text: Their shapes look like hieroglyphs on ancient tablets. It is said that the two are somehow related. It has the attack Hidden Power with the cost Psychic, the energy cost 1 and the damage of 10. It has the ability [Join] with the description: Once during your turn (before your attack), if you have Unown [J], Unown [O], Unown [I], and Unown Dragon on your Bench, you may search your deck for a Basic Pokemon or Evolution card. Show that card to your opponent, then put it into your hand. Shuffle your deck afterward. It has weakness against Psychic 2. 
Unown [J]