elite booster box pokemon Sword & Shield Battle Styles Trainer Skeledirge ex UV Resistant Pokemon Prismatic Elite

Once exiled you can play it up until the end of your turn

This gives you a lot more control over the course of other players turns than you may normally have and is a great card to use in conjunction with threaten effects (that's to say, cards that let you steal your opponent's cards until end of turn) like Act of Treason

Regeneration The final ex-evergreen mechanic introduced in Alpha only to phase out later was regeneration

A Saving Grace

Sources: PokemonTCG/pokemon-tcg-data, TCGdex, TCGCSV/TCGplayer, Bulbapedia WOTC promos, Bulbapedia Ancient Mew, Bulbagarden Archives, and PriceCharting variant naming for Ancient Mew