It seems like Poison is the Answer, but since you have to kill them both at the same time, there's never enough damage. Has anyone done this with ANY kind of Bio Build?
i used crystalize in one and used the speed build(get a speed gear and put 4 points in shadow blend, 1 point in toxicant, 4 points in withdrawal and try to put at least 1 point in agile exposure : cast toxicant, shadowblend, then attack it with agile exposure then use withdrawal)