Unown [T] (Japanese: アンノーン [T] Unknown [T]) is a Psychic-type Basic Pokémon card. It is part of the Neo Destiny expansion.
"Tell" is the word associated with Unown T in the Unown Mode. Hidden Power is a move in the Pokémon games that Unown can learn. This card's Pokédex entry comes from Pokémon Crystal, though it is heavily reworded.