Windstead says:
quick question Szemely I want to put a dose of poison on Coltens sword, but the PHB rules say that it will only last ten min being that Kai is a master of poison I feel that if Kai apply the poison then use one of his candles to coat it with wax and then slip his sword in to its sheath it would hold the poison until he draws his sword and the wax is striped off. That being said I don't think that it would be fair to do this to multiple weapons and it should not last the full 10 mins would i be aloud to do this and how long do you think would be fair.
I have no problem with the waxing of the blade to retain the poison's potency until use. A couple of things though:
1. Poison ain't cheap at 100GP per vial - and a vial is only good for one application to a blade (or three pieces of ammunition). I know you character has a background that supports having/working with poison but he should only have a limited supply on him.
2. Candles ain't cheap - ok, they are super cheap, but your character will use one complete candle each time he coats a blade (or three pieces of ammo)
3. Poison's effect only lasts for 1 minute, not 10.
4. What is a Poisoner's Kit?
PHB says:
Poison, Basic. You can use the poison in this vial to coat one slashing or piercing weapon or up to three pieces of ammunition. Applying the poison takes an action. A creature hit by the poisoned weapon or ammunition must make a DC 10 Constitution saving throw or take 1d4 poison damage. Once applied, the poison retains potency for 1 minute before drying.