New BWR Rarity Cards will be added in the upcoming Black Bolt & White Flare Japanese Pokemon sets. BWR presumably stands for Black and White Rare, referencing the monochromatic coloring of the Pokemon Black & White Base Set Booster Pack [10 Cards] Mega Charizard X ex Pokemon Phantasmal Flames Hyper Rare 130 094 PSA 10 Underground Case Breaks The 10 Most Expensive Gold Rare Pokmon Cards TCGplayer