What do you think about Eyes of the Watcher, Netherese Puzzle-Ward, or Prescient Chimera?

Jace, Mirror Mage, Mordenkainen, and Jace, Memory Adept are good possibilities.

Honestly Archmage Ascension isn't my pet card at all lol. If I had to choose a pet card, it would definitely be Soldevi Digger. There aren't many cards like it in Magic. Hullbreaker Horror is hard to replace if you keep creatures in the deck. Tidespout Tyrant costs too much mana for what it does if you ask me. You are only running 32 lands so hard casting bigger mana cost spells is going to be difficult. (I personally try to always run 38-40ish lands in most decks). Did you consider using Jace, Unraveler of Secrets?

You could also add Rogue's Passage. Dispersing Orb could also work if you run Crucible of Worlds.

I think you can very easily cut Artificer's Assistant. You might could replace Master Transmuter with Proteus Staff

Portent, Crawlspace, Web of Inertia, Dream Tides, War Tax, Glacial Chasm, Monastery Siege, Cryptic Command, Extract, Portcullis, Dissipation Field, Overburden, Archmage Ascension, Frozen Aether, Reins of Power, Rapid Hybridization, Siren's Call, Cyclonic Rift, Mission Briefing, Reality Shift, and Resculpt are just a few you could potentially use. You can very easily go creatureless if you want to. You just have to lean on different win conditions and use cards like Ward of Bones /etc.

Let me see. You could add Personal Tutor, Rhystic Study, The Phasing of Zhalfir, Winter's Chill, Graven Lore and maybe Sunstone along with Crucible of Worlds (since you are going snow lands). I will research some others and add any other suggestions I find.

This deck is a work in progress and unfinished. Suggestions are welcome.

I need to update this deck. It's not totally finished. Just the basic idea. Null Brooch and Ensnaring Bridge are really underrated for control decks.

I like the direction of this.

All esper control is good :)

Changed my mind eventually about adding Humility. It's such a great card. We'll see how it goes!

I just need the mana for Ad Nauseam at first. Then I have cards like Mox Diamond, Mana Crypt, Lotus Petal, etc. I also put in Deserted Temple so I can untap Maze's End in case Amulet of Vigor isn't able to. You are correct about the Mana to activate Maze's End comes from lands I put into play with Manabond.

Discarding at random? No thanks haha!

Maze's End alone isn't a win con. You need 10 gates also in play. Hence why you need tutors to find Ad Nauseam so you can get Manabond and those 10 gates in play all in one turn. Scavenger Grounds is something I considered but I'm not sure how one card with a niche purpose would help me that much overall. Don't get me wrong, it's a fantastic card but I will have to test this deck more to decide if it's actually needed. Also, I want the fast mana from Crystal Vein instead of waiting for Temple of the False God. If a card doesn't speed up my win con, I'm generally not adding it unless it's totally necessary (like Pact of Negation) Great suggestions and advice so far! I appreciate it. I'm pretty comfortable with the end result. I have a few other older decks that I'm going to update so stay tuned for more fun!

I disagree with Crop Rotation being as effective as a tutor. The purpose of most of the nonland cards in this deck is to find Ad Nauseam, protect it, or cast it faster. That's why I have cards that search for instants as well. Maze's End will be found with Ad Nauseam almost always. I could put lots of cards in to plan for every way to counter me. However, each card I add like that decreases my chance to get a tutor to find Ad Nauseam. We won't agree on this probably and that's ok. I just want you to understand why I made this decision. This is more of a "want all, lose all" strategy. I added the channel lands because they are lands that double as removal which is great. I think slaughter pact could help but I don't see a card I could remove for it. If I mess with the number of tutors, I won't have much of a chance to draw one in my opening hand. Remember, any tutor I draw in my opening hand reduces the turns to win by up to 2 more (if a get a mana rock also).

I don't think Crop Rotation will be all that great honestly. It's usable but more like a filler card. I have 23 total mana cost from all spells in the deck (other than Ad Nauseam). It would be great to keep it under 20 but I don't think it's possible unless I ditch tutors (which I won't). I made one final adjustment to lands by getting rid of Vivid Lands and adding other lands that don't enter the battlefield tapped or give only one use of one mana of any color. You really only need to use the colored mana once in most cases anyway. Also, stax and control are near and dear to my heart, I just don't want to run it in this deck. It lowers my chances to draw a tutor and cast Ad Nauseam faster. It's all about speed for this deck. The longer you wait, the more damage you take from opponents! I appreciate the upvote and all of the feedback!