Primal Kyogre

Primal Kyogre is one of the true tyrants of Pokemon Go, absolutely towering over the competition with its absolute mastery over Water Type damage output thanks to its phenomenal moveset and amazing base stats. This is also a monster with a unique effect; while normal Mega Evolutions only provide Mega Boosts for their types, Primal Kyogre hits the field and boosts Water, Electric, and Bug Type moves while active, giving it even more utility than most. And while most Pokemon who naturally supersede the 4,000 CP mark suffer a 9% nerf to their stats, Primal Kyogre was given a far lower punishment, allowing it to tower over the meta as one of the strongest things that we will likely ever see. 

The cost to unlock this beast may be high, but the rewards are fantastic!

Best PvE Offensive Moveset

• Waterfall and Origin Pulse* is virtually the ultimate Water Type moveset.
• Thunder can be useful if you want to utilize Primal Kyogre for Electric damage, especially since its Primal Boost extends to Electric Types as well, though it's a little sub-par on this fronts due to lacking a Fast Move to match.
• Surf is the runner-up move, with Hydro Pump a bit behind that.
• Blizzard is underwhelming despite Primal Kyogre's legendary power.