With the release of the Mythical Island expansion pack featuring Mew, the Pokémon TCG Pocket meta has changed with its new cards altering some of the previously ideal decks, including the Lightning-type decks featuring Pikachu ex. Some decks have been altered far more significantly, like Mythical Island’s addition of Celebi and Serperior or the cover Pokémon Mew being an essential part of Psychic-type loadouts. In this case, however, one key card makes Pikachu ex decks a lot more efficient. There is a lot to get excited about when it comes to this mini-expansion, including the immersive full-art Celebi card that is a must-have.

https://screenrant.com/pokemon-tcg-pocket-best-mythical-island-lightning-deck/