Feat: Sticky Poison
A combination of additional viscosity and careful application keeps your weapons poisoned even when suffering significant wear and tear.
If your Strike with a poisoned weapon would expend its poison without your target attempting an initial save (due to resistance or your Strike being a critical failure, for example), attempt a DC 5 Flat. On a success, your weapon remains poisoned.
If your Strike with a poisoned weapon succeeds, attempt a DC 17 Flat. On a success, your weapon remains poisoned until the end of your next turn.