fight your foes with powerful and venomous strikes 

venomous strike

Starting when you choose this tradition at 3rd level, you can manipulate your enemy’s ki when you harness your own. Whenever you hit a creature with one of the attacks granted by your Flurry of Blows, you can impose one of the following effects on that target:

• It must succeed on a con saving throw or change the damage too poison and you regain 1 ki 
• It must make a con saving throw. If it fails, you can deal an extra 1d6 poison damage 
• It can’t take reactions until the end of your next turn.

stinging strike

At 6th level, you gain the ability too infect your fists with poison whenever a creature fails a save against stunning strike from you they take an extra 2d4 poison damage or are instead paralzed (your choice).

leeching venoms

Beginning at 11th level,  whenever a creature takes max poison damage from stinging strike or venomous strike you regain 1 ki.

Quivering Palm

At 17th level, you gain the ability to set up lethal vibrations in someone’s body. When you hit a creature with an unarmed strike, you can spend 3 ki points to start these imperceptible vibrations, which last for a number of days equal to your monk level. The vibrations are harmless unless you use your action to end them. To do so, you and the target must be on the same plane of existence. When you use this action, the creature must make a Constitution saving throw. If it fails, it is reduced to 0 hit points. If it succeeds, it takes 10d10 necrotic damage.

You can have only one creature under the effect of this feature at a time. You can choose to end the vibrations harmlessly without using an action.