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Demon Lord's Skull

 The charred remains of an ancient demon ruler once killed by the Mad God. Oryx’s wicked spellcasters have cursed it with the ability to resurrect and control demons.

Tier UT (Limited)
MP Cost 110
On Equip +65 HP
Effect(s) Dark Ritual: On ability use, 70% chance to summon an undead demon minion
Demon Damage: 250 every 0.4 seconds
Demon Duration: 6 seconds
Damage Skull: $\begin{cases}200&\text({wis}<50)\\5*\text{wis}-50&(50\le\text{wis})\end{cases}$
Defense Ignored 125
Heal 0
XP Bonus 7%
Soulbound
Feed Power 700

Obtained Through Consuming a stack of 15 Shards of the Intern Exchanging a stack of 30 Shards of the Intern at The Tinkerer

Notes
Part of the Agents of Oryx Abilities.

This unconventional skull deals a large amount of damage compared to other skulls, which also scales strongly with WIS, at the cost of not healing at all. It also provides a significant HP boost that is only surpassed by the Bloodsucker Skull, the Skull of Corrupted Souls and the rare Mindwaster Skull. However, its main merit is its 70% chance to summon a demon minion upon use, which will follow the player and rapidly “zap” enemies to deal damage.

A single demon is already capable of dealing massive single-target damage - inflicting about 3,750 damage over its lifetime - however, this is taken to new heights due to the fact that not only does the summon not have a cooldown, but there is no limit on how many demons can be spawned at once. If the user has a good Magic Heal pet and MP-boosting gear, they can potentially create and maintain a horde of demons to deal insane DPS to all enemies that stand in their path.

However, the skull also has its downsides. The demon minions will not chase after enemies, which means the player has to stay close to foes in order to deal maximum damage - which can be dangerous for a robe class like the Necromancer. The demons also can’t do AoE damage like a normal Skull can, making it poor for crowd control. In addition, the chance of summoning the demon is not guaranteed, meaning there is a 30% chance for an ability usage to be (relatively) useless. And of course, the lack of healing makes it a poor choice if one needs sustainablility. Regardless, this skull remains a unique and solid pick for Necromancers who want DPS above everything else.

The undead demon minion has the following sprite:

Agents of Oryx Abilities
 UT. Demon Lord’s Skull
Skulls
Limited Edition Skulls
 UT. Demon Lord’s Skull