Nozdormu is still very easily abused, and Blizzard has not shown any inclination to fix it.
Wow, that Lock in #3 is a total noob. He's sitting there with a board clear in hand against a ramp druid with 2 Aspirants on the board. If don't clear those out and get rid of his acceleration (literally the whole point of the deck) you're dead, everyone knows that.
There's no specific combo that you need to do to abuse Nozdormu (and, in fact, generally it's the person who doesn't play him that gets to abuse the effect, making him a very dangerous card to include in your deck).If Nozdormu is on the board--whether you played him or not--your goal is suddenly to cue up as many long animations as possible and then quickly hit the End Turn button. All of the animations will continue to play, preventing your opponent from getting a chance to do anything. Cards with long animation effects are ideal, such as Sludge Belcher's death or even the Emperor's end-of-turn animation. But even setting up multiple attacks can be sufficient, since everything that happens after you hit End Turn takes away from your opponent's turn.I've been on the receiving end of this far too many times. I'm supposed to have 15 seconds for my turn, damnit, not 15 seconds to watch pretty animations hoping that I'll get a fraction of a second in which I can actually select minions/cards and try to do something.