What pokemon should I use to take on Wish cave?

[Koopa Pride]

Well,I have every friend area accept the ones that come with pokemon,dragon cave and one more,but I dont know the name =)

I also have every item(used AR but,its just supply's to build a stragedy or to spam joy seeds.Dont complain becuase I used AR.)

My question is,what pokemon do I take to wish cave?My first stragedy was ho-oh,plusle,minun but,ho-oh's low level moves sucks.Same with his growths...

Anyways,I will stop with the details.Help me build a stragedy and decide what pokemon to use.
I was thinking of bringing a wobbefett,milotic and marshtomp.Suggestions please?

 

[Saurav]

This is the mail where you get Dragon Cave as a reward----->

Client: Phanpy
Objective: Escort to Gligar.
Place: Thunderwave Cave B3F
Difficulty: D
Reward: Friend Area
Wonder Mail:
H ? 0 8 ? 9 S ? ? Q 6 4
? P ? ! 8 4 S 0 + F ? !

 

[Koopa Pride]

I know the code,just who should I bring?

 

[Forci Stikane]

I do well with Mewtwo & Kyogre, remembering to bring a Thunderbolt TM in with me. But that's just me. You might want to try Groudon since it has Earthquake for quick clearance of monster houses.