This is gold. A+ trolling.

In no situation do you want to pass the turn after casting doomsday. If the spell resolves the game is over excluding misplays.

General strategy. This is the average run down of a goldfished hand for the deck. It can be faster, it can be slower however it is almost always a turn 4 kill.

Turn 1: Ramp
Turn 2: Find ad nauseam or play Zur
Turn 3: Cast Ad Naus on their end step / Fetch Necro
Turn 4: Find and cast Doomsday. Win.

You are right, Ad Nauseam does not win the game on it's own. However from a decent life total it will draw you enough cards to win the game. Angel's grace is not necessary when using it because you will still have enough life to play doomsday post ad nauseam. You don't put yourself at 3 life and pray to survive.

The deck is designed in a way that if it draws 15-20 cards it will be able to win off of those cards. By both producing the mana it needs to go off, and finding the cards it needs to win.

The pile listed is the basic low mana investment no protection pile. Doomsday piles vary greatly based on what is in your hand when you cast it, and what you expect to fight through.

If I'm getting to the point where doomsday is resolving the counter war was fought over whichever spell got me to the point where I was able to win the game. That would be Necropotence or Ad Nauseam.

Why do you keep suggesting that you need to pass the turn to win after playing doomsday or labman? It does not make sense. If that was actually how things worked, it would be terrible.

You are commenting on a deck acting like you know everything while saying that you don't actually know how the deck operates. Play test the deck and if all you are going to do is be snarky and sarcastic, please do not continue posting on my list.

What are your thoughts on Dark Petition? Does the higher cmc and spell mastery clause slow you down significantly? Or is it still worth any tempo loss?

I really like it, in most cases its basically just demonic tutor number 2.

The worst part of it is getting smacked for 5 of ad nauseam.

Generally the only times I don't want to see it would be when I'm looking for ad nauseam, since I want to be casting it on my opponent's end step when the spell mastery from petition would be wasted.

It doesn't negatively effect my tempo or combo speed.

Maybe I'm missing something, but how is Oblivion Ring better than Detention Sphere?

Since you are playing Force of Will, every extra blue card you have adds consistency to that, being able to take out token copies of things (while rare) is a useful upside, and I'm not seeing a way to abuse the multiple trigger aspect of Oblivion Ring so that is an irrelevant feature.

I was hoping no one noticed.

Detention sphere has terrible art, while lorwyn oring has awesome art.

Rarely does it matter than ORing doesnt hit multiple permanents and eventually dsphere will probably replace contamination. However, ORing is strictly worse with much better art.

I suggest adding a very minimal number of cards to make Zur a legitimate threat, as well. Possibly Empyrial Armor alone, as it synergizes with your plan, and the searchable Necropotence. One card for an alternative, and accessible method to win is an incredible investment.

There really isn't space for that sort of effect, and Zur cannot be relied on to survive for that long.

I will not win the beatdown race due to the nature of the deck. There isn't enough hate to keep other people from winning the game, and I will lose to other creature decks.

The deck only needs Doomsday and a draw spell to go off after a certain point, so in the combo attrition game we need fewer pieces than most other decks which puts us at an advantage.

Scroll Rack?

Boseiju, Who Shelters All to protect your combo?

Edit to above: You can untap Boseiju with Candelabra, effectively making your entire combo save for LabMan uncounterable.

Boseiju coming in tapped is a huge problem, and running untappers doesn't really fix that problem.

Islands are important, and our color requirements are too high to warrant a ETB tapped land that can't produce blue.

Also the deck runs a ton of it's own counter magic making boseiju not necessary.

Scroll rack on the other hand is simply too slow. That's really all that can be said about it. The effect it brings is not efficient enough to be included in the list.

Challenge Accepted:

I need to acquire 13 Zendikar Expedition lands.

9 fetches
Watery Grave
Hallowed Fountain
UW and UB new lands

Do you fetch into basics enough to support the new duals from BFZ?

Blue fetches almost always get islands.

Combined with naturally drawing islands due to the high count of them.

I think you can do away with . Aside from Angel's Grace and using white so you can use Zur to fetch Necro, is there ant other reason why you think white is necessary? already has enough tutors to ensure you get ad nauseam by turn 3.

Also, have you ever considered using Demonic Consultation?

I second the Scroll Rack and Boseiju suggestion. The deck doesn't seem to be really fast so I doubt the said cards will be too slow for it. Besides, counterbalance will work a lot better with the rack in play.

Lastly, what role does Turnabout have in the deck?

White is a splash, the only reason I'm playing Esper is because Zur is leaps and bounds more powerful than any UB general.

Demonic Consultation is too risky, since the deck generally needs multiple types of effects to win vs single cards.

This is a turn 4 deck. You will gold fish a win by turn 4 the vast majority of the time, due to this those 2 cards are too slow. I cannot afford to have lands entered tapped since I use most of my mana every turn. In addition, boseiju only protects one spell where numerous will need to resolve in order to win.

Scroll rack on the other hand really just doesn't do much for the cost.

Turnabout is used to turn colorless mana into colored or play with high tide. High tide being one of the most powerful mana generators in the deck. Which is another reason not to run boseiju.

Why Trinket Mage over Fabricate?

Already covered. They're interchangeable give the deck's curve.

Except one of them can't tutor Helm of Awakening.

"In all reality they are interchangeable in this particular deck.

All the targets worth tutoring are 1 cmc or less. I don't generally find myself tutoring for rocks outside of the ones that net mana, and even that is rare. Everything else is 1 mana or less"Answered comment 4.

Yes, I read that, and it doesn't give an explanation as to why one would use a functionally weaker option if they really are interchangeable. The deck isn't running Snap, so the fact that Trinket Mage is a creature isn't relevant.

Having a blocker is relevant sometimes.

Honestly I shouldn't be running either, and he's on the chopping block.

No Sun Titan?

He costs 6 and doesn't advance the plan.

What would he do in this deck?