The art itself is so great that I'm considering becoming a Shaman player for this expansion. It's also a great effect, absolutely tonnes of value if done right and fits into Even Shaman (though less so the current aggressive variant).
Looks fun in wild for when you bring back Elemental Destruction + Lava Shock + Healing Rain from the turn before. Or for getting a third Hex or fully charged (I think) spellstone you used the turn before.
I confess, I can't envision the combo application here. Seems like a pure value control card at the moment, which I guess is pretty cool. Shaman does have somewhat limited removal, so extra copies of things like Volcano, Hex, and Lightning Storm can be useful as games go longer.