Screen Cleaner
Nullifies effects of Light Screen, Reflect, and Aurora Veil.
Full effect
When the Pokémon enters a battle, the effects of Light Screen, Reflect, and Aurora Veil are nullified for both opposing and ally Pokémon.
In game description
When the Pokémon enters a battle, the effects of Light Screen, Reflect, and Aurora Veil are nullified for both opposing and ally Pokémon.
Pokemon with Screen Cleaner
Using Screen Cleaner in Cobblemon
Abilities are passive and always active, so Screen Cleaner costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.
See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.