Wonder Skin
Lowers incoming non-damaging moves' base accuracy to exactly 50%.
Full effect
Non-damaging moves have exactly 50% base accuracy against this Pokémon.
In game description
Makes status moves more likely to miss the Pokémon.
Pokemon with Wonder Skin
Using Wonder Skin in Cobblemon
Abilities are passive and always active, so Wonder Skin 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.