I haven't been all that happy with Alter Time since it was added. One of the first times I used it someone popped hero while I had it up and I lost 95% of the buff. The same raid I was killed because I didn't cancel it and got summoned back to my death. It was somewhat more useful in ToT due to the stat gains POST alter time from our 2p but I find myself hating it more and more. Anytime someone else pops lust/hero/time warp when I've just popped my AT I find myself getting really angry, but you have no target for that anger because it's really nobody's fault but your own. I'm sure I've done the same to other mages in the various raid groups I've run with. I wish they'd just give us a decent cooldown that benefits all three specs, possibly in different ways. I'm tired of one of our major CD's harming us by removing other procs but not resetting the ICD and debuffs for them so that they can come back up fresh post AT.