>>58484645
Yeah, you can only have one mega-evolved pokemon at a time. and it has to either faint or run out of mega power to change back.
Power boosting items are still pretty strong.
Stacking Silk scarf on Fufrou for a boosted double edge lets it hit like a truck. and recoil is based.
Arbok was also a menace until endgame because all the fang type moves give a decent amount of coverage and come out fast. Flinching is really strong. and Toxic is kinda busted as a failsafe. Unfortunately at the end of the game he wasn't really able to punch through. Might just have been my moveset though.
Never got much milage out of berries though. I need to fiddle around with held items online. Normal Gem boosted hyper beam has to be worth doing right?