Allies can be affected by a single instance of added damage effect of each damage type, enemies reduced resistance effect doesn't stack.
Item acquisition
Crown of the Tyrant has restrictions on where or how it can drop. It cannot be chanced.
Aul, the Crystal King is the rarest boss among the bosses in the Azurite Mine. Players reported that they found the boss in 200+ depths digging horizontally.
Monster restrictions
This item can be acquired from the following monsters: