Fenumus, First of the Night

Fenumus, First of the Night is a unique boss located in Fenumus' Lair. It is one of the four Spirit Beasts.

Portals to Fenumus' Lair can be crafted via a beastcrafting recipe using the Fenumal Hybrid Arachnid and any three yellow beasts. Note that buying the Fenumal Hybrid Arachnid beast from other players and adding it to your bestiary WILL NOT unlock the portal recipe and grant access to Fenumus' Lair. Player need to unlock the recipe prior. However, beastcrafting is account-bound which meant it can be done in previous league.

Abilities

 * Poison on hit : The area has a poison on hit mod and triple poison duration.
 * Tail Spike : Its basic attacks are ranged, throwing a somewhat slow dart with a low attack speed.
 * Tail Spike Swing : It sometimes also throws a volley of darts instead.
 * Spit Mortar : Throws a green -like projectile that forks every time it hits the ground, chaining 5 times.
 * Ground Stab : Stabs the ground, spreading green webs which slow by 50% and deal nearly 2000 chaos dps for 12s. A web also always appears under the character; this one does not spread.
 * Hallucinate : Makes the edge of the screen blurry, other effects unknown, lasts 5s.
 * Summon Spiders : Often summons at least 6 scorpion/spider minions.
 * Chaos Spark Spiders : During the 2nd phase, every 12 seconds, 4 webbed stones will pulsate green before unleashing a swarm of little green spiders that deal chaos damage.

Strategy
Chaos resistance goes a long way against Fenumus.

Fenumus has a low attack speed and only attacks from range, meaning if you continuously move around, its dart attack will miss you.

Spit Mortar and Ground Stab both have a wind-up, so you can be ready to dodge them. When you see it preparing ground stab, move away from it and continue moving to dodge the web appearing at your feet. For Spit Mortar, it'll shoot in the direction it's facing, so try to get behind it. The projectile's first few forks won't be too large, but the later ones will practically engulf half the room.

At 50% life, you will be webbed and teleported to an underground mine. Any ground effects or totems will disappear, as well as debuffs on Fenumus.

The webbed stones will unleash their chaos spark when the 3rd green pulse ends, allowing you to easily position yourself to avoid getting shotgunned; single sparks do not deal much damages.

Do note that poisons will last longer than usual, which will notably delay energy shield recharge.

Exclusive drops
Fenumus will always drop one of the following unique items:

The beast will also be captured by Einhar, unlocking the craft (add  suffix to a non-unique item). The captured boss is an ingredient for this recipe.

Note that fighting this beast boss again at the Blood Altar in the Menagerie will not drop another unique item.

Version history

 * Introduced to the game.
 * }