It is activated for 20 minutes and has a cooldown time of 60 minutes. Also, as with all auras, if the account using it is logged out while the aura is activated, the timer will continue to run out. The standard poison purge aura is required before buying this aura. Hence the cumulative price is 2,750 + 12,500 = 15,250 Loyalty points. It can be upgraded to master poison purge for another 32,500 Loyalty points.