As I reply to your comment:
- The Wiki states Lv. 71 - 90, but a developer noted this on the Forum as an answer for the Pickup table. The Prism scale is even states in earlier levels, so an exact Pickup table for Insurgence is not present at this current point:
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I noted that Pokepon can be an efficient way to get IV stones, but I personally think that it is the best way if you are also wanting Nature changes or Shiny chances for it to be the best way.
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Breeding, shinies, perfect IVs are NOT a part of the end game. All those things are optional for the end game. But I did never say that Pickup is a bad method, but I justed wanted to state that the combination of those methods (Rock Smash and Pickup) is not worth the time. And of course you can check the Pokemon after more than 1 turn (in reply to your first comment), but I noted that as if they pickup an item, the chance will slightly decrease, so it will become less efficient after every Pokemon that picks up an item.