[ORAS] Mega Pinsir Team Build [Rate My Team]

[big bird]

Rapid Spin's not needed as nobody sets up hazards in VGC Doubles btw. Rather than Serperior maybe Amoonguss as Spore is really useful and Amoonguss can be both physically and specially defensive. It has recovery in Giga Drain and it's Ability Regenerator, and it can take Ice and Fire type attacks (depending on your spread) rather well. Furthermore, it will usually go first in Trick Room as it's super slow, and finally, Sludge Bomb hits Fairy types (Also resists Fairy types EG Sylveon Pixilate Hyper Voice). AAAAND can redirect attacks with Rage Powder.

Against Specs Sylveon:

252+ SpA Sylveon Psyshock vs. 252 HP / 184 Def Amoonguss: 96-114 (43.4 - 51.5%) -- 6.3% chance to 2HKO

252+ SpA Pixie Plate Pixilate Sylveon Hyper Voice vs. 252 HP / 72+ SpD Amoonguss: 59-70 (26.6 - 31.6%) -- guaranteed 4HKO

Against Scarf Poli:

252 SpA Politoed Ice Beam vs. 252 HP / 72+ SpD Amoonguss: 82-98 (37.1 - 44.3%) -- guaranteed 3HKO

Against Heatran:

252 SpA Heatran Heat Wave vs. 252 HP / 72+ SpD Amoonguss: 164-194 (74.2 - 87.7%) -- guaranteed 2HKO

You can switch up spreads to live Heatran's Heat Wave better for example investing max EVs in Sp Def.
Safety Goggles are not necessary on it, probably Black Sludge is the way to go.

This set used in calcs is:

Amoonguss
252HP/184DEF/72SPDEF
Sassy Nature

Typical Moveset:
Giga Drain
Sludge Bomb
Spore
Rage Powder

Could try Clear Smog to stop stat boosting mons if you really want (DD Mega Salamence, PuP Mega Kangaskhan) Or Protect to play some mind games. Hope this helps! :]