in dungeon settings, DRK and WAR can do some good life steal now that this patch is released. For DRK, you pop TBN and blood price, then use the ensuing blood for delirium, spam dark arts abysal drain. when MP gets low, you should have enough blood to use quietus to replenish enough MP for more DA-AD. For WAR, the self sustain is limited to steel cyclone. Haven't had the chance to play, but I imagine you'd want to use steel cyclone when you're low to bounce back up, or use it as a buffer for when the healer sets up HoTs on you. It's not as nice dps as using decimate, but the self sustain looks worthwhile.