As the friend that Josh is referring to in this post. I want to say that i use the spell only in dire circumstances as it is very over powered. (Minus the first time i used the spell just to show how bad it was...
)
I am in favor of seeing the spell changed, it is much too powerful especially at the tier it is available at. With my build my passive caster stat is 28 so i have no issues casting the spell. I am interested to see how folks will address it. I have my own idea which i will post later.
Anyways the spell results in limiting condition: Helpless, which is defined as from page 318 of the Arcanis Main Book (Please take note of the very last line if you don't believe it can reduce you to 0 Stamina.):
Helpless:
A Helpless creature cannot defend itself, cannot
act, and is typically prone unless otherwise propped up.
Such a creature is completely at the mercy of the environment
and the actions of others. Helpless characters
have an Avoidance of 11. Successful melee attacks
against Helpless characters are automatically Critical
Successes. The attacker may, at his option,
elect to withhold Wound damage inflicted
by a melee attack against a Helpless creature
to reduce its Stamina to 0.