Question: is psystrike a legacy move?
Answer: Gengar with Lick or Shadow Claw is a legacy moveset, but a Gengar with Hex will also work just fine. If you are lucky, you might even grab a Shiny green Mewtwo from your raid. ... The latest re-release of Mewtwo includes the exclusive move Psystrike, which is seen as the strongest psychic-type move for the Pokémon.