>>30287394Kill the helper, except when you think the original pokemon is about to run out of PP.
If the helper is a different species, such as Happiny instead of Igglybuff, kill the helper.
Do NOT let any wild pokemon use Struggle.
Castform is summoned randomly when there is a weather effect. You can force an effect like with Rainy Day or Drizzle, or just happen upon one any time when playing. If it's raining on the overworld, it will always rain during the fight, so stay and hope it spawns.
