Is there an item that makes secondary effects more likely or guaranteed?

Question

If there is than I could do Xatu Ominous wind Stored power

Comments

I don't know of any item, but the ability Serene Grace doubles the chance for additional effects, and the Togepi line gets Stored Power via egg move.

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While you're asking a q, always check if there was anything similar already.

Answer 1

This is basically like an item for Serene Grace boost. Not possible:
Source
Kings Rock boosts flinch and Scope Lens boosts critical hit ratio though.

Comments

I thought it could have been consumable.

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Nope, nothing like that. But you can Z-Celebrate with these event pokemon-

https://m.bulbapedia.bulbagarden.net/wiki/Celebrate_(move)

Answer 2

Right now, there's no such item.
source

Comments

Yet...