Nice deck. After 30 playtests I got:

1st turn win: 10 times or 33.33%2nd turn: 3 times or 10%3rd turn: 3 times or 10%4th+ turn: 14 times or 46.67%

Obviously the 2nd and 3rd turn wins are a little more dependent on opponent plays.

The 4th turn plus games were caused by a pretty even split of drawing the combo pieces and not drawing either self mill piece. Unfortunately it seems that if you have the bad luck to draw a combo piece in each of your first 3 or 4 hands there isn't much that can be done.

An awesome ComboThough, I do have an inquiry; what do you do Leyline of the Void?

That is epic xD

If working on a budget, could one sub Mana Vault for Grim Monolith ? (-$14)

no Mana Vault is banned in legacy

I thought it is just restricted? What is the difference?

Yes, it's Restricted, so it should work as a sub. Restricted means you can only have 1 of.

No you are thinking of vintage.

D'oh! Yes, I was. :)

40% of the time, IT WORKS EVERY TIME.

No Bridge from Below ??? Shameful

Uhmm so just to clarify Cabal Therapy is the best card in this deck LOL

Sadly the most expensive uggggg

What does Cabal Therapy do for the deck?

If you are holding a combo piece you can sac use it on yourself to put it in the graveyard. Essentially allowing you to be able to draw a combo piece and still be in alright shape

Sorry, that wasn't very clear. If you are holding, say a Lab Man, you mill yourself putting the narcomoebas into play. Flashback cabal therapy by sac-ing a narc to make yourself discard the Lab Man. Then use dread return and win

also forces the opponent to discard Force of Will

What he said

How do you now when to mulligan for this deck? :L

Also, what do you think is the latest turn that this deck has a chance of winning?

Awesome deck! The look on my friends faces as I 1 turn them is superb! I would suggest adding in 2 more Dread Rituals, because I drew one on my first playtest and I couldn't get it into my graveyard or play it. Thanks! +1

Oh also, anything you can do to reduce the price? And add in (maybe) some Sphere of the Suns, because I sometimes get a lot of mana, but no black, so that would be handy. :P Thanks again!

Sphere of the sun would be wasted space in this deck. It's turn one win and pretty much nothing else at all.

Well, personally, there are situations that I have encountered in which I have 2 spirit guides, but no black mana. SOTS could solve that.

Oh yes, and, in answer to your question, I'd estimate about 5-7 turns is when you should either lose hope of winning. :D