It is card 8 of the 127 in the official Platinum checklist. If you are completing the set, mark it in your collection to keep track.
Rarity: Holo Rare. The symbol in the bottom corner confirms it at a glance, as explained in Pokémon card rarities explained.
It exists in several finishes (Normal, Holo, Reverse holo). Each one has its own price; the average above is for the regular version.
Artwork by Kouki Saitou. Some collectors chase every card by the same artist: how to start (in Spanish).
Abilities
Psychic Connect Poke-POWER
As often as you like during your turn (before your attack), you may move a Psychic Energy attached to 1 of your Benched Pokémon to your Active Pokémon. This power can't be used if Gardevoir is affected by a Special Condition.
Attacks
Psychic
Energy Burst
20+
Does 20 damage plus 10 more damage for each Energy attached to Gardevoir and the Defending Pokémon.
PsychicColorlessColorless
Psychic Protection
60
Gardevoir has no Weakness during your opponent's next turn.