New ability, low in enh. Basically steal the idea from good old windwall totem.

Windwall
2 Min CD, 4% base mana
Creates a swirling tornado 4 yards around the caster for 10 seconds. While in the windwall allies cannot be interrupted while casting. The allies are also 75% less likely to be hit with melee attacks, and cannot be hit by ranged attacks. When leaving the windwall the wind spirits dissipate bonding with the shaman grating him 60% run speed for 6 seconds and removing all snares that were applied initially.

No problem with lore, Thrall uses this in WOTLK to clear out the crap from UC. It was already a totem.. Would allow for mobility, casting(we all know this is a ele and resto shaman drawback), and some survivability. Also interesting flare for the shaman class, not a copy of paladin mage or lock spells.

Feedback? I think this is a mechanic that blizz intended for shaman being that it was an ability off the bat that wasn't polished.