To break down how I teambuild: Metagross is weak to Fire, Ghost, and Ground. The top meta threats consist of Steel, Ground, Fire, and Water, With Hints of Dark + Raichu Y (Ground: Excadrill, Garchomp, Swampert. Fire: Blaziken, Ceruledge. Ghost: Annihilape, Aegislash, Gholdengo, Ceruledge...