I usually never dust legendaries but I will make an acception to this one. I sometimes think some of the cards must be designed while high. Making this legendary, printing Bonermare excuse me Bonemare as a neutral common proves my point. Don Han'Cho crys in the corner.
I don't know why people are complaining so much. If you're running a deck that has no 4 drops anyway (or limited), this is an incredible card. It heals you for four each time something hits it and it's a taunt so it can't be ignored. Aside from being killed by spells, it can prevent and heal a total of 8 damage and more if it's hit by more than one minion. It's definitely not something to build your deck around but more something to add in your deck if you notice you're shy on four drops. You can even run it with one other four drop and it's still okay.
Maybe miracle rogue could run this? We already run very few 4 drops. With sherazin being about it. It's a nice anti aggro card for rogue. Maybe. Like super maybe. 4 mana 4 taunt, heal 4 in rogue seems okay i guess. If you can give it cold blood. Mmmmm. If we can get a way to protect this card with stealth, I would put him in rogue.