Hello, I made this decklist for fun, welcome to "4c control that has no real purpose of existing" (or something along those lines).

Color Breakdown

Blue

Main control color, the core of the deck uses counters like Logic Knot, Cryptic Command, and Force of Negation to answer your opponent's spells while using Jace, the Mind Sculptor, Snapcaster Mage, and Shark Typhoon to leverage card advantage and be a potential win condition.

Black

I would personally consider black as the secondary color for this deck (black, red, and white have essentially an equal share of color distribution), black gives you access to some amazing utility removal spells, mainly Fatal Push, Drown in the Loch, and Dreadbore. Cling to Dust is in the mainboard to deal with pesky Uro piles, Snapcaster Mage targets, and the many Lava Dart your prowess opponents will be running.

White

Access to probably the second best creature removal in Modern, Path to Exile, and the absolutely egregiously designed Teferi, Time Raveler, white can be considered the tertiary color in this deck. Teferi, Hero of Dominaria also serves as another insane card advantage engine and potential win condition. White also gives you access to some great sideboard options like Dovin's Veto for control/combo matchups and Supreme Verdict for creature heavy matchups (the biggest threat being Humans).

Red

Probably the least important color in the deck, red gives you access to burn, i.e. the small creature killer Lightning Bolt. Red is also the second color requirement for the fantastic utility spells Dreadbore and Kolaghan's Command (one of my personal favorite cards ever).

Sideboard and potential options

My current sideboard is a mesh of cards that are:

• from my other decklists' sideboards
• cards that I own
• cards that are generally pretty good in the sideboard

Engineered Explosives hasn't been the most popular card lately, but with a resurgence of Humans, RB Scourge of the Skyclaves, and the many many prowess decks running around, I think it's a solid catch-all option against most decks, especially in a 4-color deck where you can potentially use it blow up Omnath, Locus of Creation.

Thoughtseize exists in the sideboard for when you need to bring in more proactive disruption against combo, grindier matchups, and potentially prowess. As should be obvious, never bring in Thoughtseize against burn or matchups that can easily pressure your life total (Scourge decks come to mind, although I'd need to test).

I think the last card I should go over is Nexus of Fate. This card is for the mill matchup, where the gameplan post-board is very straightforward: get to 7 mana, have a wincon on board (Jace, the Mind Sculptor or multiple Snapcaster Mages are the easiest) and continuously cast Nexus until you win (with JTMS, plus him until you exile your opponent's library twice, then pass the turn).

(I'll go over potential sideboard and mainboard options at a later time, I've spent quite a lot of time on this already for never having played the deck yet LOL, rest assured I'll return to this at some point to finish it)
Feel free to comment and criticize me, again I actually haven't taken this deck out for a spin yet, everything I've written is from previous experience with Grixis/Jeskai control decks.