D&D 5E The Strongest Poisoner. New Tasha's Gish

[UngeheuerLich]

Advantage is at maximum 64% chance to hit against 20 AC. The build gets around 96% chance to hit.

The key of build is... Defeat (Poison and Attack) or Disable (Attack and Sleep) the enemy on single turn.

As a action: applying poison
As a bonus action: Quicken Booming Blade with really amazing chance to hit.
Purple Worm Poison + Booming blade is around 60ish damage.

Why is the character good?
1) No other class can do it. Highest precision ever, disable enemies to easily, spells as bonus action, enemies has disadvantage against him and can't cast spells.

2) In the middle of the fight, his attack is fatal (Sleep or Poison) and accurate with almost zero chance of surviving.

An elven champion fighter can do it much more easily.
Apply purple worm poison. Action point. Attack twice with extra attack and triple advantage and 19-20 critical hit chance is a higher chance to crit in that turn. Only problem is getting advantage in the first place. There are solutions though.

 

[Paul Farquhar]

It’s functionally 3d20.

It only takes one application of disadvantage to cancel out both dice.

 

[Hohige]

An elven champion fighter can do it much more easily.
Apply purple worm poison. Action point. Attack twice with extra attack and triple advantage and 19-20 critical hit chance is a higher chance to crit in that turn. Only problem is getting advabtage in the first place. There are solutions though.

No,. It isnt easier.
Nice, Its strong, but no way to get advantage.
Also, The sorcerer can repeat this, while the fighter cant.
Also, Darkness is stronger, because It also apply disadvantage against enemies attacks and also defends against spells.

 

[Paul Farquhar]

I see one big weak point of this build - poisons. They aren't cheap and everywhere. I bought poison once and for 100 GP It wasn't big deal I want to do again.

They are expensive to buy and most monsters worth their salt are at least resistant to poison anyway.

 

[UngeheuerLich]

No,. It isnt easier.
Nice, Its strong, but no way to get advantage.
Also, The sorcerer can repeat this, while the fighter cant.
Also, Darkness is stronger, because It also apply disadvantage against enemies attacks and also defends against spells.

It is cherry picking a certain level with unlimited resources.
Go up to level 8 and you will find better combinations. A reliable way of applying advantage is taking the fighting style that allows to chose a single battlemaster maneuver. You can also chose shield master to shove the enemy prone. Depending on the reading before or after you actually attack.
If you are an elf, you can use mask of the wild to start with advantage.
Your darkness, "devil sight", applying poison, attacking also takes two turn.
Also it is dangerous to rely on advantage to do anything RAW you can easily level the playing field by casting fog cloud. Devil sight does not help you seing through fog and so everyone is blind and neither character has advantage. Taking magic initiate, the fighter can counter your level 2 spell with a single 1st level spell. Your only saving grace is counter spell which will cost you one of your third level spells. But at that point you can't really speak of reliably use your combo.
If you then remember that the 1 vs 1 scenario is rather rare, you notice, that often enough that combo is more a hindrance than anything else. And if the enemy choses to just run away, out of your darkness spell, and come back later, the fighter has the upper hand.
If you then remember that as sorcerer, a hightened levitate spell usually is enough to take out a single enemy, why bother.

 

[Flamestrike]

No,. It isnt easier.
Nice, Its strong, but no way to get advantage.
Also, The sorcerer can repeat this, while the fighter cant.
Also, Darkness is stronger, because It also apply disadvantage against enemies attacks and also defends against spells.

Elf - Rogue 5 (Feat that grants Devils Sight invocation) would murder the 'Strongest Poisoner'

 

[UngeheuerLich]

Elf - Rogue 5 (Feat that grants Devils Sight invocation) would murder the 'Strongest Poisoner'

Nice find. Against a single attack the rogue can apply disadvantage to negate the advantage. Has sight himself and is immune to sleep.
Instead of elf, dwarf or stout halfling is also not bad because of natural poison resistance.

 

[Flamestrike]

Nice find. Against a single attack the rogue can apply disadvantage to negate the advantage. Has sight himself and is immune to sleep.

He uses his reaction to halve damage, not apply disadvantage.

Swashbuckler works. Wood Elf.

+Charisma to Initiative means the Swashbuckler likely goes first.

• Bonus action Dashing each turn he's got 70' move, and he doesn't provoke AoO's (Fancy Footwork) from walking away from the Sorcerer,
• Can SA the Sorcerer simply by being in solo combat with him (Rakish audacity),
• Can see through the Darkness (no disadvantage, or advantage in return, so no trivantage),
• Is immune to Sleep (elf),
• Can Hide (bonus action) in any nearby natural light obscurement,

The Swashbuckler likely ends the battle by the end of Turn 2, without any Poison, and without expending ANY resources.

Hang on, the Elf cant take Eldritch adept as they dont have the Spellcasting feature.

Back to the drawing board.

 

[Bitbrain]

Oh look, it's the Sorcerer King.

Omigosh, you’re right!

 

[UngeheuerLich]

He uses his reaction to halve damage, not apply disadvantage.

Swashbuckler works. Wood Elf.

+Charisma to Initiative means the Swashbuckler likely goes first.

• Bonus action Dashing each turn he's got 70' move, and he doesn't provoke AoO's (Fancy Footwork) from walking away from the Sorcerer,
• Can SA the Sorcerer simply by being in solo combat with him (Rakish audacity),
• Can see through the Darkness (no disadvantage, or advantage in return, so no trivantage),
• Is immune to Sleep (elf),
• Can Hide (bonus action) in any nearby natural light obscurement,

The Swashbuckler likely ends the battle by the end of Turn 2, without any Poison, and without expending ANY resources.

Hang on, the Elf cant take Eldritch adept as they dont have the Spellcasting feature.

Back to the drawing board.

Thanks for the correction. My bad.
Make it an arcane trickster with a familiar.

Or make it an eldritch knight.
Or very easily, make it a hexblade warlock. If they win initiative, they can even apply hex blade curse and have 19-20 crit range.