Poison Mist is a weapon action granted by 
Argument Solver.
Description
On a hit, deal extra 
Poison damage equal to your proficiency bonus and surround the target in a noxious cloud that possibly 
those within it.
Properties
- Cost
Action- Damage
- Normal weapon damage
- + Proficiency bonusPoison damage
- Details
Attack roll
Range: Normal weapon range
Recharge: Short rest
How to learn
Granted by the weapons:
Notes
- Targets inside the Poison Cloud created by Poison Mist roll their saving throws against your spellcasting DC rather than your weapon action DC.