Rasta_Viking29: this is what I have going so far. Sorry it took so long to get up.

No problem man I'm in no rush, sometimes I take days to reply to stuff. I like this a lot, had most of these cards in mind. I'm going to start with this as my list.

What's your thoughts on Ashiok, Nightmare Weaver and Sarkhan, the Dragonspeaker in here?

I am not a fan of Sarkhan. He gets hit by Banishing Light and Utter End , whick will probably be the most popular removal spells. Stormbreath Dragon is, in my opinion, a bit more versatile. I do like Ashiok a lot, but he is a bit meta dependent, so I am not too sure yet.

Tromokratis is better than Pearl Lake Ancient in my opinion. Might give him a try.

I would be interested to hear your justification for that, Krakshot. I tend to disagree with that. Part of the advantage that Pearl Lake Ancient has is the flash keyword. Being able to keep up your mana just in case is really important. The other big advantage is that it cant be countered. Tromokratis , although bigger, cannot provide those benefits, and his temporary hexproof is rather lackluster in my opinion. the ancient can come back to my hand if I really need him to (like when my opponent casts End Hostilities )

In the control match up, yes, the Ancient is better. However, Tromokratis protects itself better with its temporary Hexproof. You are going to untap with Tromokratis, period (exception of a board wipe, yes). The other reason is that Tromokratis has real evasion, and Ancient does not. Tromokratis ends the game. Ancient does not.

I'd encourage you to play around with both and come to your own conclusion. I personally would play the Ancient out of the sideboard.

So here is my line of thinking: Ancient is clearly better in the control match up, and we both agree on that. So lets look at midrange. The flash allows you to use ancient as a sort of removal spell if they have a board state, and if not, you hold up counters and/or removal util their endstep. With Tromokatis, you tap out to play him, and hope they don't jam a hard to deal with threat like Stormbreath Dragon or the new sarkhan. As a control player, I would prefer the ancient in this matchup. In an agro matchup, I think we can agree that neither of these cards are particularly great, and would probably be sided out. The main reason Ancient is in the main as of right now: I am not entirely sure what to expect from the new meta. If control decks aren't popular, I will move him to the side.

If we're talking big blue creatures I like Soul of Ravnica more than those 2. 6 mana, resilient to Thoughtseize , flying, can block Stormbreath Dragon , and draw cards.

The only problem with that is his ability costs 7 mana and will usually only draw 1, maybe 2 cards

I used to run Soul of Ravnica in my grixis deck, but paying 7 mana for 3 cards isn't good enough.

Thoughts on Mogis, God of Slaughter being in mainboard? I find he and Keranos, God of Storms are really good in combination with eachother.You need some mass removal, like AEtherspouts or Bile Blight .

Mindswipe is also a pretty neat mid/late game counterspell. Will you consider running Dragon-Style Twins ? They do more damage than stormbreath and prowess makes them huge if you're running a non creature based deck, it goes really well with Anger of the Gods as prowess makes it a 4/4, clears the board and then you can deal 8 damage to an opponent.

Any reason to run Jace, the Living Guildpact and have so much card draw?

Well this is a control deck, so the card draw is very important. The Jace is a really solid card, putting cards I don't want into the graveyard which synergizes quite well with delve. Also, this deck is built more for the control matchup right now. As far as I can tell, Temur monsters will be a thing, and so will Jeskai control. I am building this deck to be decent against both of those. I may move Mogis to the main, but we will see. This deck will change based on the meta. This was just a rough draft to get me started.

Read the Bones instead of Divination . It goes 4 cards in, and the life loss of two isn't really much of a worry. I do however think that you need more threats, but am stuck on this regard.

You have no early game defense on creatures, and your tap lands screw you over royally. You need to put in Mana Confluence to be able to get any mana possible, and then one more Urborg, Tomb of Yawgmoth to be able to avoid the life loss from Mana Confluence and skip the need to use fetches on occasion.

Finally, some quick defenses will be useful. Lightning Strike and Magma Spray come to mind. Then Ruthless Ripper . Master of the Feast seems like it would be an excellent win condition here, along with Stormbreath Dragon .

Thank you so much for the feedback! I always appreciate insightful suggestions. So here is what I think: Jeskai burn/tempo is pretty huge right now, and I would rather keep the self inflicted damage to a minimum because of that. That is why I chose Divination over the bones. That is also the reason why I don't have Mana Confluence in here, although I do agree that another Urborg would be good. I already have 2 Ashiok, Nightmare Weaver , 1 Sarkhan, the Dragonspeaker , 1 Keranos, God of Storms , 1 Empty the Pits and 1 Pearl Lake Ancient as win conditions in the main, and I think I like it this way right now. I will definitely test with your suggestions, though. lastly, I agree totally about needing an early game defense against agro decks. I have been considering your suggestions for a while now. My deck in real life reflects these concerns, I just need to do some updating here

It's not really aggro, but you get slaughtered by other control and midrange decks. You just don't have enough board presence to deal with the amount of creatures the average standard deck has, no matter what type it is. Then there is also too much removal for how little board presence your deck presents.

my control match up has been excellent so far. I agree I have some short comings when it comes to midrange decks. I do need more answers for those kinds of decks, but it is a work in progress, and I will definitely work on it. I really do appreciate the feedback, thank you so much for the help!

how have you liked Taigam's Scheming i've been testing it in various delve brews and it's bonkers

I like it as a 2 of. It is good if you are a heavy delve deck. I think digging 5 cards deep is powerful, but the fact that it doesn't draw the cards is what holds me back from it. I may end up cutting them for something a bit stronger if it comes down to it, but so far they have been doing alright

Have you tested this much?

The version I am currently playing is a bit different, but I have had a good bit of success. the only time I lose is when I am mana screwed. that might sound cocky, but im serious.i mulled to 5 against and abzan midrange deck on the play and I was able to win because I had good mana all game

here is the list I am playing at the moment, SpaderAce. It should be the same list as I have (minus a different sideboard)

Here's something to think about, after Crux of Fate is released and there's LESS need for Anger of the Gods (less because it's still 2 turns early), will Grixis be better than just straight U/B or will you just be playing it cause you like it? Currently that's where I'm at, Grixis is my favorite but it may not be worth it. I'll probably build something very similar to this though to test it, it seems very much like I was imagining

Why do you have Temple of Malady? Is that just a mistake? I don't usually worry about lands bases on here, but that seems weird lol

lol that was suppose to be Temple of Malice... Now that I have fixed that, Here is where I am at. Crux of fate will reduce the need for Anger of the Gods, but that doesn't mean you shouldn't run it. It is amazing against the sidisi whip deck and red agro decks. The fact that there will be a black wrath may actually make grixis better than straight u/b. My reasoning is this: u/b needs Perilous Vault as a sweeper, but that means you cant develop your board very well. With the wrath, you can play things like Keranos, God of Storms or Sarkhan, the Dragonspeaker as win conditions without sweeping them away. So essentially this is the conclusion I have come to: the red makes you much more efficient at dealing with small creature decks, while the 2 color variant is better against midrange decks

Hmm, that makes a lot of sense. Thanks! I'll let you know when I come up with my build!