AbilityBaby Evolution
Once during your turn (before your attack), you may put Pikachu from your hand onto Pichu (this counts as evolving Pichu) and remove all damage counters from Pichu.

Pichu is Pokédex #172, generation 2 (Johto). Pichu δ is a Basic Metal Pokémon with 50 HP. The card lists Pikachu, Pikachu (#025) under evolves to.
Pichu δ sits at 76/110 in Holon Phantoms, position 76 of 111. Before it is 75 Phanpy, and after it is 77 Pidgey δ. The set belongs to the EX series. It was released on May 1, 2006. The printed size is 110. This checklist is longer, at 111 cards. The listed rarity is Common.
Baby Evolution is listed as Poké-Power. Once during your turn (before your attack), you may put Pikachu from your hand onto Pichu (this counts as evolving Pichu) and remove all damage counters from Pichu. The attack Paste lists no damage number. The cost is Colorless. Search your discard pile for an Energy card and attach it to 1 of your Pokémon that has δ on its card. Weakness is Fighting ×2. Retreat cost is 1.
Pichu (#172) has 14 other cards in the catalog. Those other cards are in 13 sets. The other printings with a release date run from 1999 to 2025. The earliest other card is Pichu 35/53 in Wizards Black Star Promos (1999). That card is named Pichu, while this one is Pichu δ. That card lists 30 HP, and this one lists 50 HP. The rarity there is Promo, and here it is Common. Ken Sugimori illustrated that card, and Kouki Saitou illustrated this one. 11 other cards of Pichu list a different HP.
The illustrator line reads Kouki Saitou. I count 652 other cards in the catalog with that illustrator.
Holon Phantoms set binder is where a full Holon Phantoms set goes. This card fills one slot there. A generation binder holds one card of each species. Pichu can fill a slot in Generation 2 binder (Johto). Themed lists that include this exact card are Delta Species cards and Baby Pokémon. I still need this card.
Once during your turn (before your attack), you may put Pikachu from your hand onto Pichu (this counts as evolving Pichu) and remove all damage counters from Pichu.
Search your discard pile for an Energy card and attach it to 1 of your Pokémon that has δ on its card.
Holon Phantoms, in the EX series. It was released on May 1, 2006. The printed size is 110.
76/110. It is entry 76 of 111 in this checklist.
Kouki Saitou. The catalog lists 652 other cards with that illustrator.
Common.
Pichu #172, generation 2 (Johto).
Paste.