Accurate Poisoner

This is a Rogue Talent — a class feature gained through that class's own talent choices, not a feat you pick through normal feat selection.

(Ex) When the rogue successfully hits an opponent with a poisoned weapon and would deal sneak attack damage, she can forgo the sneak attack damage and increase the poison’s potency. If she does, the poison’s duration increases by 2 (for example, large scorpion venom lasts for 8 rounds instead of 6 rounds, and drow poison lasts for 4 minutes instead of 2 minutes).