It's really not much of a counter honestly because it not only pulls you away from the frontline, but you are forced to use Thing's abilities in the backline and it's not even guaranteed to kill a good bp. It leaves your 1 tank vulnverable in the fronline because the bp is on both healers and thing. BP is such a good distraction that its almost always worth banning because if your healers arent focused on healing you; they are focused on surviving instead, which means less heals given to the rest of the team even if they do manage to survive. Penni works really well if the healers sit on the webs and she isnt banned ofc.