Completely agree. Glad other people are intelligent. Broken card
This card needs gutting. It gives aggro decks too much mid game stability against mid/control decks. They already chip you down and then any chance you have of killing them first is completely impossibe thanks to this card. All hollow hound does is promote non board/non interactive gameplay. It discourages opponents to play minions because if you do you are just feeding the hound
Any foothold you have on your opponent not only can can be taken from you at any moment but swung back against you with 1 card.
Cards like this shouldnt exist without massive downside in deck building such as reno. This is better than reno. It heals you a bunch, kills your opponents board, develops board with a good minion and has 0 deck restriction