It's said that no foe can remain invisible to Lucario, since it can detect Auras. Even foes it could not otherwise see.
Release information
This card was released in the Call of Legends expansion, originating from the Japanese Lost Link sub-set. The RetortTheme Deck included Cracked Ice and Non Holo prints of this card.
Trivia
This card is used as an example in the seventh of Pokémon Art Academy's Eight Rules of Drawing Pokémon.