Hmmm, looks like the devs are not giving up on evolve shaman...
Sigh. Well, at least Rabble Bouncer* could be proven useful in this deck.
 Of course it's a worse Ancestral Spirit. With all of the high-cost, weak stated minions nowadays (and in the next exp.) this card can backfire a lot. Concede shaman was strong and consistent. This card is purely for fun.
At least, Unstable Evolution will live on in some fashion after rotation. I highly doubt this spell will be used much but I am happy to see that Evolve continues to be part of Shaman. *votes as playable*