I think they just made the hero power oversynergistic. The discard mechanic should be more fair. Atm you don't give anything away in order to draw card. On the contrary, you get strong advantages - 3/3 Silverware Golem on turn 1..., 2 x 2/1 Boneweb Spider, etc.
Killmox, the Banished One is busted as well. Paired with Felosophy it just win games on his own. Needs to get only + 1/1 and become discardable. Would still be etxtremely strong as he is rush and lifesteal.