From Bulbapedia, the community-driven Pokémon encyclopedia.
The 2012-13 Modified format (informally called BW-on) is a former Modified format used for the Trading Card Game's Play! Pokémon Organized Play division and in most sanctioned tournaments worldwide.
The 2012-13 Modified format was announced on June 15, 2012, rotating all expansions from the HeartGold & SoulSilver Series and Call of Legends Series.
- North America and Europe: September 1, 2012 to August 27, 2013
- 2012 Battle Roads Autumn
- 2012-2013 City Championships
- 2012-2013 State/Province/Territory Championships
- 2012-2013 Regional Championships (U.S. & Canada)
- 2013 Battle Roads Spring
- 2013 National Championships
- 2013 World Championships