Nerf Now!! 1410
More than how many bots Hearthstone have, the fact bots are so prevalent AND succesful is kinda of a bummer. It hints the game may just be just too simple, to a point a sequence of scripts can easily win a match.
But perhaps, when the expansion hits and the number of cards get higher, it will get harder and harder for bots to adapt.
Until them, put some area of effect spells on your deck.