FreakMONS
This is new tier where the pokemon has its type changed to the types its weak against. Now many pokemon has several weaknesses. The type will be changed to the type that is first in the weakness list alphabetically. Also the number of types the pokemon will have depend on the number of types it originally has.For Example, Squirtle is Water -type and is weak to Electric and Grass. It type changes to Electric as its the first weakness alphabetically. Now lets consider Gengar.Its Type is Ghost/Poison .Its weak to Dark,Ghost,Ground,Psychic(ignoring abilities). So its type changes to Dark/Ghost. Now think of levitate on it and basically u get no weakness. On the downside , no pokemon can have Normal as its type and all normal pokemons become Fighting Type.All pokemons will be legal including Uber Pokemons. Now to add to the move pool for Stab, the pokemon gets 3 moves from its new type.It can be of the same or different type in case of a dual type pokemon. It can be anything.Like Squirtle gets access to Volt Tackle/Zap Cannon. Similarly Gengar gets access to Dark Pulse and other dark moves.Also pokemon like Spritomb,Swampert gets only one Type ,Fairy and Grass Respectively.