I have a idea for Another evocation for shaman, i call it "nature's force":
Status:
HP: MANA X1.5 of shanam
Defending: Magic level /2 of Shaman
Magic atack equal of the shaman ml (distance atack)
skills:

Nature's Rath: if a shaman use's a hability in a enemy, The nature's force use's the same hability, but with 80% of efficiency
Nature's Heal: If a shaman cure's himself, nature's force cure's himself with 120% of efficiency

and the most important:
Human's fear: If nature's force target a player,she take's a debuff called "human's fear" for 30 seg per atack: damange and cure loses 50% of efficiency.

The cost for this hability is 400 of mana.