Mewtwo's moveset change affects the contents of gamepress raid guides
Thunderbolt/Flamethrower/Ice Beam Mewtwo is viable for scyther solo, with Thunderbolt being the best one. Thunderbolt Mewtwo exceeds Raikou in terms of DPS against Lapras duo.
As for others that are legacy;
Flamethrower exceeds Focus Blast vs Regice and Registeel
Thunderbolt exceeds Psychic vs Poliwrath Duo
Thunderbolt is borderline viable for Kyogre Trio
Ice Beam is the best vs Rayquaza trio
Flamethrower is viable vs Pinsir solo
Thunderbolt and Ice Beam are one of the best vs Aerodactyl solo
Thunderbolt is next to Zapdos against Azumarill and Vaporeon solo
Flamethrower is viable vs Piloswine and Tangela solo
Notes: If Flamethrower or Ice Beam and Psychic hit on the same effectiveness Psychic is better, If Shadow ball or any one of the new moves hit on the same effectiveness SB is better.
Answers
And to think everyone was pissed off at the legacy of shadow ball.
We now have three sets with much wider super effective coverage, has created the greatest Protean in the game likely for the whole run of the series, and also gave us the candy stocks to power up an army without dipping into rarecandy. To all who think shadow ball being legacy could have nothing good come of it, I say good day, we have better sets now that offer super effective damage rather than just neutral and with the greater chance of being weather boosted.
"Thunderbolt Mewtwo exceeds Raikou in terms of DPS against Lapras duo"
Huh... No. Raikou and Zapdos have better DPS against Lapras. Except if you take their worst moves of course but I suppose that wasn't your point.
https://pokemongo.gamepress.gg/comprehensive-dps-spreadsheet?pkm=Lapras&type1=ice&type2=water&qs=%40electric
