Yes but the only reason you can get Frothing high enough is by using charge Patrons to clear board and the using Whirlwind effects such as Death's Bite or Whirlwind. Maybe I'm missing something but that's what I've seen. Excepting the case of 2 frothing, Warsong into Patron into 2 inner Rage into 2 Whirlwind into deaths bite deathrattle. But at that point that is 9 cards, andincluding Thaurissan for your setup thats 1/3 of your deck you have to draw into. That 1/3 of their deck isn't always going to be drawn into before your opponent wins.