Seems like this fits into some kind of murloc or curator deck, but it's rather expensive for that.
Also of note: you can run two of these and a single Call in the Finishers if you want the shaman quest without committing to a shaman deck. It'd be some kind of control deck that has some use for tokens (Bloodlust win condition?), but doesn't depend on murloc synergy.
The thing is, when N'zoth brings this guy back. he is still going to be a huge threat, this card doesn't die to flamestrike or fireball. I think this card is not too bad for the 7 mana spot, there are not much to play on 7 mana anyways.