This Zangoose is more directed towards the 1v1 metagame on Pokemon Showdown.
(Zangoose) (M) @ Toxic Orb
Ability: Toxic Boost
EVs: 252 Atk / 4 SpD / 252 Spe
The point of this Pokemon is to deal a massive amount of damage.
Protect will give time for the Toxic Orb to activate. Once the Toxic Orb has activated, it will put the Toxic Boost ability into effect. Toxic Boost increases all physical moves by 1.5x. Facade will double damage from 70 to 140 if the user is poisoned, I think you get the combo. After using this, if they still manage to have HP, fling over that Toxic Orb. If they still manage to have health, (even unlikely after facade), use Revenge to finish them off. They would've had to of attacked you some time around.
Math Behind This: (Not sure if my math is correct, but):
Toxic Orb Activation - 2nd Turn
Toxic Orb - Toxic Boost 1.5x damage on physical attacks.
Facade - Toxic Orb Poisoning - 70 x 2 = 140 damage.
Toxic Orb Poisoning - Toxic Boost - Facade
140 x 1.5 = 210 damage.