[REQUEST] I need some help with my VGC team...

[Marcusube]

Mega Garchomp doesn't fit on this team but normal Garchomp does. The Mega does better on Sand Teams, Tailwind teams and Trick Room teams. Sure you have Trick Room as an option but if it doesn't get set up you're getting outsped by base 100s like Kangaskhan, Medicham and Charizard X.

Garchomp @ Life Orb/Focus Sash/Yache Berry
Ability: Rough Skin
Level: 50
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Earthquake
- Rock Slide
- Dragon Claw/Iron Head
- Protect

Scrap Steelix, end of story. Sure Sheer Force Steelix does good in general, but on this team it doesn't make the fit. I suggest using either an Electric type, Flying type or a more offensive based Steel type. Just by removing Steelix, you lose another common weakness to Ground meaning that Garchomp can freely spam Earthquake.

I'd say just go for Mega Gardevoir instead of doing the dual Mega thing. Check out this post for an analysis on Mega Gardevoir and see which set you like.

Can't really make a Heatran spread off my head but...

Heatran @ Leftovers
Ability: Flash Fire
Level: 50
Modest Nature
- Heat Wave
- Earth Power
- Substitute
- Protect

...is the standard set

Here is an analysis on Gastrodon along with some builds you can consider.

You still have no basis as to why Gengar is on the team so I can't suggest a set.
http://www.teammagma.net/teambuilder/?44...82m|94|423

That is a look at your team based on weaknesses and resistances