@Darth Crater ninja'd me on this, but do you remember Healing Salve from Alpha, and it's colorshifted version Healing Leaves from Planar Chaos
These are co-op versions of the game , which feature unique mechanics and cards only playable in the Quests, as well as some specially-foiled alternate art cards included with the player decks
Polymorph effects will get rid of a creature on your battlefield and make you reveal cards from the top of your deck until you reveal a creature that can replace it, putting it on the battlefield
The process starts by creating an account
Alternate turns until one player collects all their prize cards or knocks out all their opponent's Pokmon
Vstar Pokmon are evolved from Pokmon V cards and each feature an exclusive Vstar ability or attack, some of which can change the outcome of a game of Pokmon: TCG if theyre successfully executed