Eelevate
The Pokémon floats off the ground, making it immune to Ground-type moves, as well as the Spikes, Toxic Spikes, and Sticky Web statuses. When the Pokémon knocks out a target with an attack, its highest stat is boosted by 1 stage.
In game description
The Pokémon floats off the ground, making it immune to Ground-type moves, as well as the Spikes, Toxic Spikes, and Sticky Web statuses. When the Pokémon knocks out a target with an attack, its highest stat is boosted by 1 stage.
Using Eelevate in Cobblemon
Abilities are passive and always active, so Eelevate 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.