Poison Rock

Poison rocks emit poisonous gas that can cause the player's Poison debuff bar to fill up, thus poisoning the player by 7 hitpoints/second. Certain ways to avoid being poisoned by the rocks include taking a weak antipoison potion; Poison rocks are located in the Bloodblight Swamp and its vault, Kletterbuja Kara.

Trivia

Prior to the removal of lifeward, the Poison debuff would bypass lifeward the player had, instead damaging base health.