Apologies, but by 3-3-9 are you referring to the number of cards that tap for a certain colour?

No. 3 ABUR duals, 3 shocks, and 9 fetches.

The 3-3-9 is the optimal foundation for a tricolor EDH land base.

Many thanks Epoch - very informative as per usual. I've made some changes to my own deck in accordance with the above information.

I think Negate is much stronger than Arcane Denial .

The things you are most afraid of are combos and counterspells. Aside from the creature based combos negate catches both of those. It is likely that you are the most degenerate deck at the table, and most of the time your counters are going to be used to protect your combo. Negate does a great job of this. I just hate to see my opponent draw cards.

With 9 fetches, Wasteland , Strip Mine , Tolaria West and Cephalid Coliseum , I think that Life from the Loam would almost always get some value on the initial cast, and once it starts dredging it can be a very powerful land recursion engine.
I would also like to suggest Mystic Snake and/or Plasm Capture . The latter might be too slow, but they both have served me well in the past, even if they just end up chump blocking.

Just for the sake of correctness you have Chromatic Lantern in your maindeck and sideboard.

And I just read the description..... Sorry!

Epoch said that he wanted to remove Chromatic Lantern , I think he must be keeping a list of 'maybe' cards.

Yeah I didn't read the description well. It says the sideboard is on the bubble cards.

infinitemana Life from the Loam was cut a few months ago, even if he would have the card in hand, he would never want to cast it. Also, you run the risk of dredging a piece of your combo if you do decide to dredge it. One a side note, Life from the Loam + Scroll Rack + Lands in the graveyard is a 3 mana draw 3 every turn.

What are your feelings on Defense of the Heart ?

Cons: It is opponent "controlled" and it's slow seeing as you have to wait until your upkeep.

Pros: It can win you the game on the spot, it keeps your opponents creature count low, and it dodges most removal.

I'm not sure whether or not you've already considered these options, but I think Gifts Ungiven and Fact or Fiction (Gifts especially) would make your deck much more consistent, as you can search for combo pieces and dig for counterspells or whatever you need much more efficiently.

@thispersonisagenius: Gifts Ungiven is banned in Commander.

Fact or Fiction was cut because it was expensive. I'd rather have a cheap tutor.

@Ohthenoises: Defense of the Heart was cut a while ago because it was just too inconsistent. It's easy to deal with because it has to be played in advance, and there's no real guarantee that its ability will trigger. Your opponents also know what's coming, so they can prepare in advance.

@infinitemana: Life from the Loam was cut a while ago. It's a good card, but it didn't really do enough for me.

Mystic Snake was also cut a while ago. It's too expensive to use properly. Plasm Capture was never in the deck, but it's also too expensive to use properly.

Why don't you play Phyrexian Arena ?

@rathalos3000: Phyrexian Arena is too slow. It, too, was cut from the deck. I just didn't want to invest 1BB in the card while I could be ramping or countering something. Rhystic Study was cut for the same reason.

Wow, it's harder than French :)

Phyrexian Arena is very powerful in French :)

I know that Deadeye Navigator is a key part of your deck, but do you think it's ban-worthy?

I think no, but I wonder why Tooth and Nail isn't banned ;)

In my opinion Tooth and Nail and Deadeye Navigator aren't banned for two very simple reasons: cost and vulnerability.

DN does nothing by itself. It takes time to set up for him to be useful and it's effectively an 8 mana investment to get running

TAN is expensive and vulnerable to a multitude of things that can stop it.

What about Memnarch ? When you have the Deadeye Navigator + Palinchron or Phantasmal Image + Palinchron for your Infinite mana. It is game over time.

I Second Memnarch As A Win condition

Memnarch isn't a very good win condition, at least in this deck, because it's only functional when I have infinite mana. It's much too expensive and limited to be applicable outside of the combo.

My win conditions tend to be cards that serve some purpose outside of the combo. For example, Blue Sun's Zenith and Venser, Shaper Savant are both usable utility cards even without an infinite mana or bounce combo.

Capsize would be the best card if you wanted something else as a win condition when you have infinite mana probably, since it is usable outside of it.

I think there's enough cards to capitalize on infinite mana as is though.

Capsize was in the deck a while ago, but it was cut (this is a pretty common pattern in the development cycle of this deck). I like Capsize in theory, but it's just too expensive to cast for buyback as just a regular utility spell.

The problem with offering suggestions for this deck is exactly that difference between theory and practice. BUG has many, many theoretically strong options, but not all of them are viable at the competitive level.

I wouldn't cast Capsize for its buyback unless you had infinite mana. It's mostly there for the needed temporary removal in game threatening situations. Otherwise you should just hold it. It's more of an "if all else fails" type of card.

I'm not saying it's worthy of a slot in the deck, there are better options. But paying its buyback without infinite mana is a waste, especially in a deck that generates this much card advantage. It should be treated as an expensive Boomerang unless you have infinite mana.