Deadly Poison is a poison that is bought by rogues who then apply it to their weapons. Every time the rogue hits with the weapon, there is a 30% (up to 50% with the Improved Poisons talent) chance of the victim being poisoned for 12 seconds. The poison will deal damage over time. It can stack up to 5 times on the same victim. Once stacked to 5 times, each application of Deadly Poison also causes the poison on the Rogue's other weapon to apply.