Completely petless at the moment however working towards getting an Outsider for the boss monsters - apart from that pretty much everything can be put to sleep for like 10 seconds or more leaving plenty of time to dance around them before distortion rippling them all.
Boss monsters are not effected by sleep so definately think of a different tactic with these guys - however I find that distortion ripple (I think - the nova burst one) will stun a boss creature to allow you time to run to a distance so you can continue to distortion wave him.
Few things to note - I have distortion ripple on my left mouse button and distortion wave on the right - the cool down for the distortion ripple is a little over 2 waves to one distortion ripple - so during the recharge time the left mouse button will just fire your normal staff attack.
You will need a good mana recharge and plenty of mana. Basically since you are using a spell rather than a straight attack the mana pool gets depleted surprisingly quick and if you don't watch this you can be short of mana when getting surrounded while charging for a distortion ripple burst.
At this stage my character is level 41 and cruising through Greece Epic. I can kill most level 45-50 monsters and unique monsters with one pulse from my Distortion ripple (level 16) and managed to kill the Epic Centaur warchief with pretty much 1 pulse of DR and 2 waves (level 15).
