Alas, Andorhal

Alas, the time to attack Andorhal and drive out the lich that controls it is upon us!

You may have noticed a summoning crystal inside the watchtowers you marked. We believe these feed the lich power needed to dominate the city. You must take down all four of them; destroying one will no doubt summon more of the lich's troops. If all four are down, the lich itself should arise to defend the heart of the city.

Destroy the lich, <name>, and bring me a shard from its phylactery as proof!