>>23181544Mirror B. uses Rain Dance constantly coupled with Ludicolo's abilities (Rain Dish/Swift Swim) and Leech Seed. It's pure hell since you're underleveled and there are no good Flying or Poison types at that stage.
Dakim is based on Earthquake + Protect/Levitate. The only real hard thing about him is catching Entei on the first try.
Venus is based on hax. She uses a combo of Paralysis + Attract + Confusion.
Ein is based on Rain Dance + Thunder. His rematches have Pokémon with Lightningrod to make it worse.