You know the saying that anything can be good in game?
Well, it's a lie lol.
There's nothing really wrong with Medicham, but there's nothing... right about it either. It has lackluster stats all across the board, and it's stat distribution reminds me of a Serperior clone gone wrong. Its best stats are Speed, Defense, and Special Defense, the former one at 80 and the latter tied at 75. Its HP, Attack, and Special Attack are absolutely pitiful at base 60.
While Mega Medicham is a great Pokemon, Medchamite is post game. Not to mention, Medicham comes very late game since it's found in Ultra Wormholes. To be honest, if you want to use a Psychic type in game, use Espeon.
Espeon @ Wise Glasses
Ability: Synchronize
IVs: 0 Atk
- Dazzling Gleam
- Psychic
- Shadow Ball
- Grass Knot
Dazzling Gleam for the Dragon Trial and Hapu's Flygon. Psychic is STAB. Shadow Ball can clear the Ghost trial and beat Acerola. Grass Knot for most of Hapu's team.
Hope this helps! :)