Might work well with frost nova? Freeze the board, heal, and then maybe draw into your clear or something. It doesn't seem great if you can't clear at the same time, but nova can get you that extra turn.
it needs 4 enemy minions to be in par with healbot so it's not broken or anything.. but it's good vs aggro for control decks... maximum heal for 14 but that's maximum.. punishes for overextending tbh.. now aggro players will also need to consider this card when pressing advantage a bit more.. it doesn't kill token or aggro it's just good versus them..
It seems like a tech card against Zoo at first sight, but if there are at least 3 enemy minions on the board, I think it's worth it's mana cost (Antique Healbot is a 3/3 minion that heals for 8, this one is a 4/4 that would heal for 6 in that situation). The real problem is that it sucks against decks like Freeze Mage, and you generally need some strong heals in that match, so I suppose that running only this card for healing in your deck is not usually a good idea, but I like it.