Party Horn

Doubles enemies - Provides the optional skill to double the number of enemies (but not bosses).

The party horn is a passive item that attracts more enemies to the player's location after an optional skill is enabled. This skill is activated through the player's skill screen and takes effect immediately on all enemies not currently spawned.

Once in their inventories, the player can go to their skills screen and choose to activate a new Double enemies skill, unlike other skills, this skill is disabled by default.

When turned on, every enemy spawns with a doppelgänger, effectively doubling the number of enemies in any environment. This does not apply to bosses. From the Skills screen description

When activated, every enemy not already spawned will also spawn a copy of themselves, this is true for enemies with a set spawn location, as well as enemies spawned from gauntlets, but won't apply to bosses. Deactivating the skill after an enemy with a copy has been spawned will not delete the copy.

Given the fact that the skill does not apply on already spawned enemies, the player should choose to use the Battle gong or manually re-enter the area so that enemies are respawned and the effect is applied to everyone.

Starting with version 1.14.003, all save files start with this item already in their inventories, the skill that this item enables will also be available from the start, but initally disabled. The item did not exist prior to this version.