Challenge Card: Master Boom Boom

Challenge Card: Master Boom Boom is a Challenge Card that can be purchased after acquiring the Hozen-Fur Fuse by killing hozen on the Burlap Trail with Kota Kon (while on The Burlap Grind (daily)), then turning in the resulting quest, Boom Boom's Fuse, to the card traders at the Brawler's Guild for :
 * , Brawl'gar Arena
 * , Bizmo's Brawlpub, Deeprun Tram