Overgrow

Effect
Overgrow boosts grass based moves of the Pokémon by 50% when the Pokémon's HP has 1/3 or less of its total HP.

Pokémon which can have this ability

 * Bulbasaur
 * Ivysaur
 * Venusaur
 * Chikorita
 * Bayleef
 * Meganium
 * Treecko
 * Grovyle
 * Sceptile
 * Turtwig
 * Grotle
 * Torterra
 * Snivy
 * Servine
 * Serperior
 * Pansage
 * Simisage