[RATE MY TEAM] Battle Spot Doubles Team : A Sand Tornado!

[Delta]

Well, I will be honest, I don't have much to say. I love the team composition, and I especially love Mega Garchomp. I think it is such an under-used mega. However, I would change the EV spread, as well as the moveset. I have poured lots of love into finding a great Garchomp moveset, and here is my best:
Garchomp @ Garchompite
Ability: Rough Skin
Shiny: Yes
EVs: 252 HP / 128 Atk / 84 SpD / 44 Spe
Adamant Nature
- Earthquake
- Outrage
- Protect
- Rock Slide

I can't remember what the 44 speed, was, probably just a speed creep, but I am pretty sure it is needed. Anyways, the most important calculation for this build is it can survive a Life Orb Modest Sylveon using Hyper Voice. Ya, it is that awesome.
52+ SpA Life Orb Pixilate Sylveon Hyper Voice vs. 252 HP / 84 SpD Mega Garchomp: 179-213 (83.2 - 99%) -- guaranteed 2HKO

252+ SpA Choice Specs Pixilate Sylveon Hyper Voice vs. 252 HP / 84 SpD Mega Garchomp: 210-248 (97.6 - 115.3%) -- 87.5% chance to OHKO

There is one more thing I have to mention. Your Tornadus uses regular Kangaskhan, instead of actual Kangaskhan (Mega Kangaskhan) so, you need to run bold just to survive an Adamant Return. Food for thought.