Few tips:
1: As this deck has only 1 shadowstep try to save it for Tess.
2: It is important to remember what cards will Tess replay. You will usually place her after you played all hallucinations and blink foxes, but sometimes you will play her earlier if you know that she will place minions with charge to kill enemy hero.
3: It is not always good to play Hallucination first turn. It is 1 cost card, so it can be used to activate combo, play stronger Edwin VanCleef, or to cycle it using Gadgetzan Auctioneer.
4: When you use Hallucination, chose a card that is good with Tess and that is good in current situation.
5: Remember that Tess will replay cards you got from Lich King. Do not use Army Of The Dead if you get one, because you will loose all of your cards very quickly, and this deck has very few cards with good stats.
6: If you will play a non-rogue death knight, Tess will replay all rogue cards you played this game.