Wicked Wand is kinda complicatet to use ...
On Raids with a good tank its not problem and makes fo rme around 8% of my zonewide dps. (Our MT gets each time 1p when i die ... baaaaah - he got 1p :P)
In groups its tuffer, i seem to have aggro all the time.
I am not sure how it works in Caster groups but in MT-Group it works fine, best with paly.
Compared to Signet of Betrayl from my view.
testet in SoH up to Sisters (dirge and templer)
2047 times Wicked Effekt with average of 390 - 2.4 Milion aggro
167 times Signet with average of 1600 - around 300k aggro because i "tankend" some parts of the Demetrius Cane.
So if you got aggro probs without it (shouldn't really happend) dont use it, its pain
And hell i love the "nerv Coercers" from our Illus and Wizzis :P