Tier Update

Regular usage-based tier update implemented a new policy to tier Mega Evolutions and base formes separately. The tier update moved down 24 Pokémon whose usage of base formes was below 1.7% in a given tier. This only affects base Pokémon; Mega Evolutions that don't have enough usage to be considered OU, such as Mega Garchomp, still stay in OU.

xfix on Dec 4, 2015