IcePsychic
Ice and Psychic types: weaknesses, resistances and Pokémon
Ice and Psychic Pokémon take double damage from Fire, Bug, Rock, Ghost, Dark and Steel moves and resist Ice and Psychic moves.
That is 6 weaknesses against 2 resistances, so these Pokémon rely on Speed or offensive power to make up for it.
Ice moves are super effective against Grass, Ground, Flying and Dragon and not very effective against Fire, Water, Ice and Steel. Psychic moves are super effective against Fighting and Poison and not very effective against Psychic and Steel.
To beat these Pokémon, your best pick is Fire, Bug and Rock moves. Avoid Ice and Psychic moves, which deal little or no damage.
There are 3 Pokémon with this combination, such as Jynx, Smoochum and Mr Rime.