"To infinity, and beyond", he was saying. Well, this deck is not even infinite, but it can still win you a lot of the games you will play it. The only true thing he ever said was "This toy does not fly". Have you ever seen a deck flying over the room (except for your opponent's deck after playing against this one)?
First warning here: this deck is not fun. It is made to lose friends, to win games and exploit (lol) the synergy between cards. Don't play it to have fun!
As it is set up right now, you are ensured for a turn 6 win. Play a land each turn, then play Sidisi, Undead Vizier on turn 5, exploiting herself to search for Ad Nauseam. On turn 6, play a Swamp and then cast Ad Nauseam, drawing your entire deck and taking only two damage out of Sickening Dreams. The idea is then to play all the cards you have in your hands, discarding them all for an huge Sickening Dream! Lotus Petal is the second mana required to cast Sickening Dreams. Don't forget to sacrifice Dark Sphere not to die from your own combo!
This is the most consistant version of the deck I have been abke to build up to now, always winning on turn 6 if no other player has an answer. I know that there are some other lists running another combo, with Skirge Familiar, but I think that since it is a creature based combo, it gives one more chance for the opponents to stop it by killing said creature.