Swarm
Powers up Bug-type moves when the Pokémon's HP is low.
Pokémon with this ability17 Pokémon
FAQ
What does Swarm do?
Powers up Bug-type moves when the Pokémon's HP is low.
Which Pokémon have Swarm?
17 Pokémon have it, e.g. Scyther, Spinarak, Ariados, Scizor, Heracross, Volbeat, Kricketune, Sewaddle.