AbilityJet Geyser
Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, your opponent switches their Active Pokémon with 1 of their Benched Pokémon.

Volcanion is Pokédex #721, generation 6 (Kalos). Volcanion ◇ is a Basic Prism Star Water Pokémon with 160 HP.
Volcanion ◇ sits at 31/131 in Forbidden Light, position 32 of 150. Before it is 30 Avalugg, and after it is 32 Dewpider. The set belongs to the Sun & Moon series. It was released on May 4, 2018. The printed size is 131. This checklist is longer, at 150 cards. The listed rarity is Rare Prism Star.
Jet Geyser is listed as Ability. Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, your opponent switches their Active Pokémon with 1 of their Benched Pokémon. The attack Sauna Blast lists 100 damage. The cost is Water, Water, Water. This attack does 20 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.) Weakness is Lightning ×2. Retreat cost is 3. The card text says: ◇ (Prism Star) Rule: You can't have more than 1 ◇ card with the same name in your deck. If a ◇ card would go to the discard pile, put it in the Lost Zone instead. The flavor text reads "It expels its internal steam from the arms on its back. It has enough power to blow away a mountain."
Volcanion (#721) has 21 other cards in the catalog. Those other cards are in 12 sets. The other printings with a release date run from 2013 to 2026. The earliest other card is Volcanion XY145/211 in XY Black Star Promos (2013). That card is named Volcanion, while this one is Volcanion ◇. That card lists 130 HP, and this one lists 160 HP. The rarity there is Promo, and here it is Rare Prism Star. 5ban Graphics illustrated that card, and Naoki Saito illustrated this one. Retreat cost there is 2, and here it is 3. 21 other cards of Volcanion list a different HP.
The illustrator line reads Naoki Saito. I count 270 other cards in the catalog with that illustrator.
Forbidden Light set binder is where a full Forbidden Light set goes. This card fills one slot there. A generation binder holds one card of each species. Volcanion can fill a slot in Generation 6 binder (Kalos). Themed lists that include this exact card are Prism Star and Star cards. I still need this card.
Once during your turn (before your attack), you may discard a Water Energy card from your hand. If you do, your opponent switches their Active Pokémon with 1 of their Benched Pokémon.
This attack does 20 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)
◇ (Prism Star) Rule: You can't have more than 1 ◇ card with the same name in your deck. If a ◇ card would go to the discard pile, put it in the Lost Zone instead.
It expels its internal steam from the arms on its back. It has enough power to blow away a mountain.
Forbidden Light, in the Sun & Moon series. It was released on May 4, 2018. The printed size is 131.
31/131. It is entry 32 of 150 in this checklist.
Naoki Saito. The catalog lists 270 other cards with that illustrator.
Rare Prism Star.
Volcanion #721, generation 6 (Kalos).
Sauna Blast (100).