We need to see your team's moves, natures, EVs, items and abilities. That way, we can give a better rate.
I do not know the first thing about EVs...but here is the rest:
Charizard - Nature: Jolly ; Ability: Blaze ; Item: None ; Moveset: Flamethrower, Fly, Flame Burst, Wing Attack
Blastoise - Nature: Jolly ; Ability: Torrent ; Item: None ; Moveset: Water Pulse, Aqua Tail, Skull Bash, Protect
Zoroark - Nature: Quiet ; Ability: Intimidate; Item: BlackGlasses; Moveset: Focus Blast, Punishment, Feint Attack, Cut
Garchomp - Nature: Serious; Ability: Sand Stream; Item: None ; Moveset: Dig, Rock Slide, Dragon Claw, Crunch
Zebstrika - Nature: Relaxed ; Ability: Motor Drive; Item: None ; Moveset: Discharge, Stomp, Flame Charge, Spark
Note: All Moveset and Items are a work in progress. Suggestions are more than welcome!