Recommendations to complete my team?

[Dele]

Garchomp|Adamant|Rough Skin - Fire Fang, Earthquake, Dragon Rush, Shadow Claw

Blaziken|Jolly|Speed Boost - Aerial Ace, Flamethrower, Focus Blast, Shadow Claw

Alakazam|Timid|Magic Guard - Psychic, Shadow Ball, Energy Ball, Focus Blast

The remaining 3 slots, I'm thinking of a Grass, Electric, Steel or Dark type, but I can't decide which.

I know the team is Uber/Overused already, but I don't really care about tiers.

I don't like legendaries.

[randomspot555]

All you're doing is playing the main 8 gyms+e4. You don't need the Internets help for that.