Challenge Card: Razorgrin

Challenge Card: Razorgrin is a Challenge Card that can be purchased after finding an Impeccably Sharp Tooth by fishing in fishing pools on Pandaria, then turning in the resulting quest, Teeth Like Swords, to the card traders at the Brawler's Guild for :
 * , Brawl'gar Arena
 * , Bizmo's Brawlpub, Deeprun Tram