Mew is the ultimate pokemon in any game. It can learn any tm and hm ever realesed into the game and can learn normally some of the strongest moves in the game like Aura Sphere,Ancient Power and Transform.
Also there are strong stat boosters it can learn like Nasty Plot, Amnesia and if in a pinch it can use Baton Pass. Unfortunetly there is no way to get Mew without a hack or going to events that happen around the world.
Arceus is the second best pokemon in the game especially since it can learn 90% of all the tms which would make it a rival for mew. It is the first normal type legendary (excluding regigigas) but it changes types depending on which plate it is held for instance it changes into fire if it holds the Flame Plate. Its signature move is judgement but the effect changes depending on the plate that he holds at the time he uses it. It learns extremely strong moves like Hyper Beam, Perish Sonf and Seismic Toss but it can heal itself with Natural Gift, Cosmic Power, Refresh and even Recover. Arceus is also only able to get by event but everone who has will be unbeatable.
