Castform is Pokédex #351, generation 3 (Hoenn). Castform Sunny Form is a Basic Fire Pokémon with 70 HP. The card lists level 35.
Castform Sunny Form sits at 51/146 in Legends Awakened, position 51 of 146. Before it is 50 Castform Snow-Cloud Form, and after it is 52 Dragonair. The set belongs to the Diamond & Pearl series. It was released on August 1, 2008. The printed size is 146, and the checklist is the same length. The listed rarity is Uncommon.
Temperament is listed as Poké-Power. Once during your turn (before your attack), you may search your deck for any Castform and switch it with Castform Sunny Form. (Any cards attached to Castform Sunny Form, damage counters, Special Conditions, and effects on it are now on the new Pokémon.) Shuffle Castform Sunny Form back into your deck. You can't use more than 1 Temperament Poké-Power each turn. The attack Ember lists 40 damage. The cost is Fire, Colorless. Discard a Fire Energy attached to Castform Sunny Form. Weakness is Water +10. Retreat cost is 1. The flavor text reads "Its appearance changes with the weather. Recently, its molecules were found to be just like water."
Castform (#351) has 21 other cards in the catalog. Those other cards are in 9 sets. The other printings with a release date run from 2004 to 2024. The earliest other card is Rain Castform 23/101 in Hidden Legends (2004). That card is named Rain Castform, while this one is Castform Sunny Form. That card lists 60 HP, and this one lists 70 HP. The rarity there is Rare, and here it is Uncommon. Sumiyoshi Kizuki illustrated that card, and Lee HyunJung illustrated this one. 5 other cards of Castform list a different HP.
The illustrator line reads Lee HyunJung. I count 28 other cards in the catalog with that illustrator.
Legends Awakened set binder is where a full Legends Awakened set goes. This card fills one slot there. A generation binder holds one card of each species. Castform can fill a slot in Generation 3 binder (Hoenn). I still need this card.