Summer Acerola 2/5 EX R solos Raikou's Legendary Arena [Pokémon Masters EX] 

Super effective who???
Anyways this is relatively easy. Acerola is so tanky she doesn't mind super effective damage (unless it crits), and her healing is great. What's better is that with 2/5, she can debuff Raikou's speed which eliminates the biggest problem with this fight, being how fast Raikou attacks, and it getting 30% damage boost when speed is raised
The only issue might be in Bar 3 if you get unlucky with being fully paralysed or if Raikou ever lands a crit to basically one shot. Save a recover to Bar 3 and save a sync in late Bar 2 to enter Bar 3 with a sync ready
Lucky Skill: Mind Games 2 (she needs the damage to kill Bar 3 quickly. Electric Guard might work too but Mind Games is better)
Skill gears were used. May not be needed but they help. Shown in the end of the video
Grid: ng-pomatools.w...