Well this is my team, i think its ok.
Typhlosion - Flamethrower, Earthquake, Shadow claw, Eruption
Gyrados - Hydro pump, Thunder, Earthquake, Hyperbeam
Ampharos - Iron tail, Thunderpunch, Power Gem, Thunder
Froslass - Psychic, Blizzard, Thunder, Crunch
Gengar - Psychic, Energy ball, Dark...