Ok, let's see here:
**Zebstrika**
You definity need to change his nature.This guy doesn't have good sp.defence,you should make the nature to Modest.Don't worry,i'll make another pokemon sp.defensive.On the moveset....you don't need hidden power grass beacause this guy is offensive now,and that's not going to work.I don't think you need to worry about ground types,it's only one type.So,were going to change hidden power to Double Team beacause if this ground type is defensive or sp.defencive it'll be using moves like reflect or light screen before it actually attacks,that's when you use dounble team.Other than those two,I like your Zebstrika and I think it's perfect, plus the image for him is awesome!
**Swoobat**
I like the idea for the stored power.Calm Mind helps boost air slash and stored power.But, I think you need Energy Ball instead of hidden power beacause hidden power is just so weak.Other than that,it's pretty good.But,I also think he doesn't need that much speed.There are a lot of special moves out there and this swoobat can be blown away by them.So that's why you should switch the EVs to this:252Satk,252Sdef,and 4 speed.He's just soo weak to special type moves.
**Sawk**
Nice job,but I think I need to tinker with the EVs again.You need the atack sat to be 252,beacause there's no other pokemon on this team that can do a good job as a normal sweeper!Other than that,I love this guy! You nailed this one!
**Garbador**
It has a pretty good job done on it.I can tell this guy is mostly for hazards, and I thinks he's great for the part.I'm not going to change him.
**Lapras**
This guy is very strong with a great moveset!But Swoobat will be our main sp. defence guy now so lapras gets a Timid nature.Also,there is no reason you need thunderbolt,so i'll replace it with drill run for electrics.Other than that,I likeyou lapras very well.
**Torrtera**,or now **Magcargo**
I thought Torterra has a bad movespread and bad EVs so I gave him the boot and brang in Magcargo for a fire type in the family.The moveset will be Sunny Day,Flamethrower,Rock Slide,and Solar Beam.The ability is Magma Armor,the nature is Relaxed,and the held item is a fire gem.Flamethrower is STAB,and has over 180 power with sunny day and the fire gem.Solar Beam is for it's weaknesses and type coverage.Rock Slide is STAB, anough said.
Well, that's it.Hope you win every battle with this team!