Made it to legend today using this version of Evolve Shaman.  I know, it's not the optimal list... but it is fun, a bit different, and lets you use Thing From Below (which I really wanted to do.)

I included Nightmare Amalgam and Mana Tide Totem as they're totems and help reduce the cost of Thing from Below.

Nightmare Amalgam is surprisingly good for a 3 drop. It can help you control the board early and/or do some damage while your opponent is playing small minions or perhaps doing nothing (hello, Druid.) 

I appreciate the Mana Tide Totem does not have the draw potential of Spirit of the Frog. But it's also consistent, and is still useful if you don't have small spells to trigger the daisy-chain potential of the Spirit of the Frog.  Anyway, it works just fine.

The deck's main engine is of course Evolve + Desert Hare. 

Good luck on the ladder!