* Alternatively, Mewtwonite Y enables Mewtwo to Mega Evolve into Mega Mewtwo Y, giving it Insomnia and the ability to outspeed Deoxys-A, Pheromosa, and Mega Gengar.
Aren't pheromosa and deoxy a still faster? Mmy 140 vs 151 vs 150
* If running Psychium Z, be aware that an unboosted Shattered...