BestCobblemonServers

Tera Shell

All damage-dealing moves that hit the Pokémon when its HP is full will not be very effective.

Full effect

The Pokémon’s shell contains the powers of each type. All damage-dealing moves that hit the Pokémon when its HP is full will not be very effective.

In game description

The Pokémon's shell contains the powers of each type. All damage-dealing moves that hit the Pokémon when its HP is full will not be very effective.

Using Tera Shell in Cobblemon

Abilities are passive and always active, so Tera Shell 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.