Are they just randomly picking cards and randomly picking changes? Honestly, none of these make sense. The nerf for Hunter should be the quest. The nerf for Warlock should be the Phylactery. Warriors' quest is just so damn strong with so many good synergies. Pick a spot. Priests Hero Card shouldn't trigger silenced minions which deathrattle didn't trigger. Also somehow slow down Mech Mage and Paladin just a bit. It scales quite fast.
Just my opinion. The buffs were okay. Minus the Warlock spell.