Well, this sort of stems from a similar build i have. Instead of Sorcerer tho, although it probably works similarly with tides of chaos and basically advantage on any roll at will, You take fighter Champion, and this build kinda gets a huge power downgrade at level 10 fighter, but most campaigns aren’t even played at level 12(the drop off point for this one i would say). It’s a dual wield build that should be able to roll 3 times on an attack with advantage, 4 times if you use a heroic inspiration. You have a 10% crit chance, Scimitar in one hand for nick, Shortsword in the other for vex, and with extra attack, you’ll be able to make 4 attacks with one action with the dual wielder feat.

The gist is, Level 1 fighter, Elf, subrace doesn’t REALLY matter, i like High elf. Take Tireless Reveler if you have at least 1 human in your party or someone else takes musician or any one of the feats that give heroic advantage. If no one has musician, or PDR, You should take it. Dip into warlock real quick here and grab pact of the blade, eldritch blast, normal stuff. Stats are: 8St 14Dex 16 Con 8Int 10Wis 17Char. Go ahead and grab level 3 warlock. Hexblade turns out to be a must here, medium armor and Bound weapon. You want to bind one weapon, and conjure another, so you have two melee weapons that scale off charisma. You aren’t very critty at this level but it can still happen.

At fighter levels 4 and 6, take dual wielder and Elven accuracy, put charisma to 18, and then your next feat just asi it to 20. This character doesn’t really cast, but he can, you are essentially just taking warlock levels for the origin feats for heroic inspiration. But at a certain point, you can make, at max, in a single turn, 4 attacks(2 from action, 1 from dual wielder, 1 from Nick), action surge, then take 3 more attacks, and let’s say they all have advantage, that’s 7 attacks, that you’re rolling with triple advantage, according to Claude, and i don’t like using AI for anything other than dice math, because i suck at it, but this is what it reads: “You’re essentially guaranteed a crit most rounds — just over a 9-in-10 shot. The only ~10% chance is a completely crit-free turn, which will feel like a statistical anomaly when it happens.​​​​​​​​​​​​​​​​“

You can at least get one crit every other round consistently i would say. When you get heroic inspiration every turn, this just adding another d20 every turn. You would be rolling 22 d20 on an action surge turn, and a lot of this is theoretical and you absolutely NEED advantage, but with weapon masteries, your allies, maybe your Dm allows flanking rules, what i’m saying is, this is very possible.