Mostly Pokémon Logic I'm afraid maybe it has something to do with when dragons fight in myths or ancient stories they often damage each other a lot or maybe it is just to balance out the overpowered type
Flying and Psychic are super effective against fighting
psychic and flying Pokemon are good against fighting type-pokemon
They are super effective against Grass, Dark and Psychic types.
Ghost and Dark attacks are super effective against Ghost type pokemon.
Have a diverse team, make sure there isn't a type that is super effective against all your pokes. -Blastoise -Gengar --Alakazam -Pidgeot -HM Pokemon X2 -Blastoise is super effective against rock, ground and fire -Gengar is super effective against ghost,grass and bug -Alakazam is super effective against fighting and poison -Pidgeot is super effective against bug fighting grass
It differs among card but generally speaking, psychic is weak against psychic themselves.
Flying and Psychic are super effective against fighting
Lightning is super effective against water. I hope this helps.
Ghost & Flying. I believe that's it! Not dark or bug because although they're super-effective against Psychic, they are not-effective against Fighting. And not Psychic, because though it's super-effective against Fighting, it's not-effective against Psychic.
Water and Grass attacks are super effective against Onix.
Bug Type and Fighting Type moves are super effective against it.
Steel is super effective against rock type pokemon.
Rock, electric, ice, and psychic types are super effective against Crobat.
psychic and flying Pokemon are good against fighting type-pokemon
super effective is bug
psychic pokemons and attacks are super effective
Bug types are super effective against Dark, Grass and Psychic (x2) in Generation II-onward. In Generation I, they were super effective against Grass, Poison and Psychic.