False. Thrash only confuses you and does nothing, except for having the chance you get killed immediatly. Also, Brave Bird is effective against alot of Pokémons! Thrash is the most useless move I have ever used. Okay, only Splash is more useless, but Thrash is still useless.
Pokecommunity name: TeamEmpoleon
Pokemon Showdown name: MikevdKraats
You can always battle me at PS for a Random/OU Battle!