Swadloon

You can't find Swadloon in Omega Ruby, but if you have a Shiny Sewaddle you can evolve it.

Sewaddle evolve into Swadloon at level 20
Swadloon evolve into a Leavanny when leveled up with frienship

This is my Sewaddle evolved into a Swadloon

Level 25

Nature: Timid (+ Speed - Attack)

Ability: Leaf Guard (Prevents status conditions in sunny weather)

Object: Mental Herb (Removes the effects of infatuation, taunt, encore, torment, disabled and cursed body)

Moves:

Agility (Psychic)

Protect (Normal)

Bug Bite (Bug)

Razor Leaf (Grass)

Next Shiny Tomorrow: Dewgong