I suggested this on WoW forums tell me what you think?

I've seen a few good ideas on boosting Shaman AoE Damage and would like to suggest my own.

There were 4 ways the developers are thinking about doing it, I would like to suggest a 5th.

The original 4 are:

* A modification of Thunderstorm.
* A modification of AE Totems.
* A modification of Chain Lightning.
* A new spell.

How about a new shield? that is based off a Totem?
We have a Healing shield, a Mana shield and a Dps shield how about a AoE dps shield?

Call is something like: Fire/Lava/Magma Shield (does earth/fire damage)

Could look something like this:

Magma Shield
Instant Cast
When cast your Magma Totem is consumed creating a magma shield around the caster causing X amount of damage to all enemies within 8 yards. When a spell, melee or ranged attack hits the caster, the shield doubles the release of magma causing double the damage. Can stack up to 4 times.

Stacking would something like this:
100 damage every 2 secs for 8 secs
200 damage every 2 secs for 8 secs
400 damage every 2 secs for 8 secs
800 damage every 2 secs for 8 secs