[Standard] B/G Delirium - Need Feedback

Hello there Spikes! This is my first topic post in this subreddit. I've been lurking and comments on here for about a month now. I am posting here for any type of feedback, be it "your deck sucks, play a tier 1 deck" or "A or B can improve your consistency". Below I'll put a little background so you know where I am coming from as a player, since this is my first post here, and plan to contribute/participate in discussion a lot more from here on out.

Background
I started in the Kaladesh block back in December of 2016, yes I know I am a baby MTG player. I am competitive by heart and look to seek out great strategies as much as possible, which is why I would like to ask for feedback from this subreddit. The deck started out as a "brew" after looking at a deck that was posted here using Retreat to Hagra and Walking Ballista. I liked the concept, but after testing many times over in competitive leagues on MTGO, it did not pan out at all. I however, saw the value and strength of cards like Grim Flayer and Mindwrack versus decks like Mardu Vehicles and such, so I decided to stick with a delirium shell.

The Deck

I don't know much about what information is needed, but I apologize if my land base choices are awful. I have no idea how to make a great land base for consistency, I definitely need help there. It seems to be performing fine at the moment, but there are occasions where I stumble in with a good hand, but no reliable way to cast my Liliana, Grasp, or Mindwrack Demon without a traverse drawn or in-hand. Below I will provide my reasoning for each card and number of that aren't exactly staples in a delirium deck, and then further down how I perceive each match-up within the top 4 decks I've faced. I'll then leave it to you guys to tell me your thoughts. I appreciate it!

Main Board

• Vessel of Nascency x2 - So I went back and forth with Vessel or Oath of Nissa. Oath of Nissa being an enchantment fuels delirium when you are bouncing them, but by itself cannot enter the graveyard, I also got no use out of it's second ability. Vessel I originally hated, but after seeing the plays I could make with it on turn 3 via, Grim Flayer, it led me to give it some value.

• Grasp of Darkness x2 - I main 4 Fatal Push for obvious reasons, but I also have 2 grasps, mainly for Archangel Avacyn. I run 2 of, specifically to match the 2 of Archangel's that most Mardu Ballista's run pre-sideboard. I have a 3rd in Side, just in case. It also hits Felidar, which is nice, but seeing as I have many ways to trigger revolt, via Vessel, Clues, or Evolving, I see Fatal Push as an acceptable answer.

• Transgress the Mind x2 - Being a heavy copy cat meta, transgress hits both pieces of the combo, and I have had many games where it did work against other decks as well. From taking Gideons post-board after Mardu has switched to more of a midrange, walker-ish gameplan to grabbing Verdurous from G/B energy.

• Sylvan Advocate x4 - When adjusting this deck I thought to myself, if I could provide a decent blockers and removal in the early game and get to turn 4 or 5 with a controlled board, then I can win. Sylvan Advocate came to mind, because they grow as the game continues and turn Hissing Quagmire into an offensive machine on turn 6. Quite strong when you go from having a 2/3 on turn 5 to a 4/5 and a 4/4 Death Touch on turn 6.

• To the Slaughter x1 - I board 2 total, but Main 1 simply because trample and walking ballista have been doing fairly well (so far). Post-board versus 4c Saheeli and Mardu Ballista, I have a lot more planeswalker hate for them. However, I usually mainboard for a variety of threats, including Temur Tower/GB Counters.

• Mindwrack Demon x2 - I know many people don't enjoy Mindwrack, but I've had so much success with him versus Temur Tower and 4c Saheeli. Not to mention pre-Gideon emblem he can win trades with Heart. He is a powerhouse that I enjoy having in my skies. His trample goes through whirler virtuoso thopters and is harder to remove than most creatures, unless unlicensed is in play.

• Tireless Tracker x2 - I originally main boarded 4, but it seemed excessive and usually only ever needed 1 or 2 if they ever came into play. The card advantage was great and on multiple occasions, these trackers became my win condition.

• Walking Ballista x3 - Great in general versus planeswalkers, if they use removal it fuels my delirium, overall an amazing card for delirium in my opinion.

Sideboard

• Pick the Brain x1 - Ran as a 1 of, I can live without it, but for those match-ups that discard is nice, when I draw it...does work. Although I've been torn between Pick the Brain and Lost Legacy for a while now.

• Murder x1 - Not entirely sure of this slot to be honest. I have no unconditional removal outside of Fatal Push and the Noxious in my side, so adding one more seemed like the right choice. This was definitely a choice for GB Counters, when their hulks get really large.

• Gonti, Lord of Luxury x1 - Debating adding a second gonti instead of a second Kalitas. I don't see too many recursive decks latley, and once I stick one of my larger defensive creatures, Scounger doesn't prove to be a problem.

• Kalitas, Traitor of Ghet x2 - Originally put in as a 2 of versus those Zombie decks, U/R Emerge and such. I usually side 1 in if I see scroungers, as I can traverse for him. However, I haven't seen much zombie stuff lately, so thinking of taking 1 out.

• Noxious Gearhulk x1 - Love this guy to death and see him as a great card of value, but I've only gotten to play him once versus Temur Tower and GB Counters. What do you guys think?

• Skysovereign, Consul Flagship x1 - This guy has single-handedly won me so many games. He's a bomb when dropped and a bomb when attacking. Everything post delirium and post-6 lands in my deck can crew him. Actually thinking of a 2 of in side, maybe take out Noxious? or Not add a second Gonti and add one more sovereign?

• Tireless Tracker x1 - Versus control match-ups post board, having 3 makes it easier to stick one after they've used removal. Once I get him out of dynavolt range, he becomes very difficult to remove.

• Ob Nixilis Reignited x1 - For non-dynavolt control decks. The ones I've faced usually have a bit of a problem dealing with walkers, He doesn't do much versus Temur Tower though.

• Yaheeni's Expertise x1 - The only sweeper I've included. Hits most things in Mardu, hits everything in 4c Saheeli, and most in GB counters as well. Let's me free cast all but 7 of my spells post-board on most match-ups that I bring it in. Exceptionally strong against G/W Tokens.

Match-Ups

Below I've included my side-board spreadsheet, so I don't have to list them here. If you feel so inclined, I've enabled comments on the side-board guide, like I said I'd like feedback!

Side-Board Spreadsheet

Mardu Vehicles - I do not feel favored in this match-up, but if I stick an Ishkanah and have a Grapple or Liliana for recursion post-Unlicensed, I can usually survive and grind out the win.

4c Saheeli - I honestly feel favored heavily in this match-up, pre-board and post-board. I've never faced 4C Saheeli and felt like I didn't have an answer to their next play. Their lack of counters for my discard and information plays are very detrimental for them. I can make moves to pre-pare for combo, since I will know they have it.

Mardu Ballista - Game 1 feels rough, similar to regular Mardu Vehicles, but Post-board I feel in control. I don't know if they don't expect the transgress and pick the brain or the fast delirium into "To the Slaughter", but my game plan for them is within that spectrum.

Temur Tower - Game 1, favored. The moment I distinguish between them and 4C saheeli I immediately go aggressive to close out the game. My gameplan for Gearhulks pre-board is bate them into flash blocking a non-deliriumed Grim Flayer, then Vessel break and Grasp. Although, I have significant trouble with Temur Tower decks that run Bristling Hydra. I have almost no way of dealing with them, I usually choose to either go over them with Mindwrack or Evolving Wilds revolt Fatal Push, if they Hexproof I respond with a second fatal. Not the best way to deal with them, but I don't exactly like them being able to respond to To the Slaughter by activating lumbering falls and saccing that instead. Game 2, I feel is anyone's game. I side in some answers for hulks, but I have no definitive way to deal with tower, which makes me weak against it. It's basically a race.

GB Counters (Most Variants) - I usually pair GB Counters and all Variants together simply because they have a lot of things in common. However, the Energy variant is too explosive for me when it is consistent enough to do so. They usually side-in blossoming defense, making it hard form me to remove utility creatures like Siphoner. My usual way to deal with them is side-in Noxious and Murder and make huge Tireless Trackers or go over them with Mindwrack Demon. Ishkanah usually deals with Aethersphere Harvester just fine.

I've chosen to only include match-ups that I've seen considered within the top 4 decks, either Tier 1 or Tier 2. I am eager to hear from you all, like I said, if my thought process is bad please tell me where I need improvement on and what I can do to make this deck more consistent, including if that means just scrapping the idea altogether, because it just doesn't stand-up to par. All criticism is appreciated. Thank you for the read!