If I'm feeling ambitious and the tank is giving a consistent (and long enough) incoming call, I pre-cast on one of the illusionists first, then cast it on myself so I can eek out a bit of extra dps. It refreshes fast enough for pre-cast. But then once the fight is going, I only cast on myself.
I did once pre-cast it on a warlock and myself on an encounter and that was sooo ugly. My tank was like WTF, how did you pull aggro so fast... nothing like TMX2 and reactives all proc'ing like crazy in the first 10 seconds of a fight... Live and learn, die and have to rebuff
