Ive heard the answer is the 15atk mewtwo but which one for PvP and why? : r/TheSilphArena

Pokémon GO Shiny Mewtwo / Mewtwo Level 40 / Level 50 – Unlock 2nd Charge ATK (Psystrike & Shadow Ball)– PVP Master League – TRADE (Read Describe) - PoGoFighter

For years, scientist have wondered what this part of Mewtwo was for After years of research, I have found the answer: A handle for easy transport - iFunny Brazil

Full list of all ,,monthly'' Team GO Rocket Researches that can prevent you from receiving current one. : r/TheSilphRoad

To people saying not to purify mewtwo, some people just want one 4* to max out at lower cost and mega evolve : r/pokemongo

Update on my personal Master League Classic Tier List after reaching Expert. Plus some interesting comparisons : r/TheSilphArena

Mewtwo (Master Ball Foil Mirror) R 150/165 SV2a Pokémon Card 151 - Pokemon Card

Giratina Altered PvP IV Deep Dive - UL & ML : r/TheSilphRoad

Rate my team! [If you can't beat em, join em!] - Who could I replace for Mewtwo? : r/TheSilphArena

Is Mewtwo stronger than mew? - Quora

The Silph League Arena: Competitive Pokemon GO Tournament Play

Unlocking Mewtwo and Shadow Mewtwo - Pokkén Tournament DX Walkthrough - Neoseeker