How often is The Mummy's Curse World Change activated?

Question

How many days does it take for The Mummy's Curse World Change to be activated again?

Answer 1

From my experience, such world change happens, in average, twice a month. I haven't ever seen it happening twice in less than 7 days, and sometimes it took about three weeks for the jars to turn back to their breakable stage. But I've noted this WC down 20 times in 10 months, so the average interval seems to be about 2 weeks. Please, note that this interval can be shorter or longer based on how long does it take for the game world to kill the necessary amount of honour guards.

Answer 2

This world change happens when the pharaoh Horestis has been killed. And will stay in this state until recovering which can last a few days. You can check to see if this curse is active at any Guide NPC.

Player: horestis
Guide NPC: Horestis's body has been desecrated. His curse now hangs over Ankrahmun like the shadow of the vulture and his tomb is almost empty.