Derp
 

Our team usually goes Galio, wu kong, and kennen. or wu kong, irelia, morgana. or warwick wu kong and jarv.
we usually go for a focus team.

Shaco, Mordekaiser, Yorick --- 6v2 ulti combo
Amumu, Nunu, Morgana/ Kennen --- press the R combo
Tryndamere, Zilean, Kayle/ Yorick --- I will not fxxking dead combo
Singed, Volibear, Alistar --- throwing you around combo
Sion, Nasus, Veigar --- turtle to the end combo
Pantheon, Twisted Fate, Master Yi/ Sivir --- teleport backdoor combo

One team comp that worked surprisingly well was:

Sion Top
Ryze and Alistar Bot

Triple Stun, Self sustain in abilities, Covers AD, Tank/Support, and AP burst roles. Needs more testing :P

Morde/Morgana/Tryn, although we've found Morgana (Myself) and Morde going bot with Tryn top, we just 2v3 the game. Need better top lane :/

Sion Teemo Shyvana

Olaf, nuff said...

I find that a champion is only op if I can't lane against them as Olaf xD

I usually Top/Jungle as Olaf, and gank after grabbing Jungle buffs. Went 10/0 in first 8minutes last game o_0

Me and 2 friends of mine worked on a good comp :) and we got : Top : Any Tank DPS: Jax,Xin,Olaf Bot must be Malz!! all the time malz and jungle WW its a instant death WW-Malz focus DPS with ults and rest of dps goes to Top laner :) Riven works good :) as well :) have fun :D

Try:
Jungle Shyvana
Bottom Lane : Shen
Top Lane : Jax

:)

Try:
Top: Sion
Bottom: Warwick, Dr. Mundo
they will wreck you leave you crying and show you why 3v3 is broken

Stop saying Jax... He is so easy to counter. SS= Clense and flash Champ= WW Build= TANKY WW (YES you never see that but it works :) )