Black Gem Monstrosity
Monster Helm set · exact bonuses below, straight from the game data.
data retrieved 2026-08-23 · datamined via UESPAt a glance
Set bonuses
| Pieces | Bonus (exact datamined text) |
|---|---|
| 1 pc | Adds 34-1487 Offensive Penetration |
| 2 pc | While in combat, casting a Soul Magic ability consumes a Soul Gem and gives you a Black Gemsplitter for 10 seconds. This effect can occur once every 6 seconds. Dealing Light or Heavy Attack damage fires the Black Gemsplitter at your target, dealing 17.1% of your target's Max Health as Magic Damage, up to 17100 Magic Damage. |
Who actually runs Black Gem Monstrosity?
Tracked creator guides that mention it (5)
From the creator pages we monitor — a mention, not an endorsement; dates shown.
| Creator | Guide | Updated |
|---|---|---|
| Hyperioxes | Magicka Necromancer Solo Build | U50 | ESO | 2026-07-03 |
| Hyperioxes | Magicka Templar Solo Build | U50 | ESO | 2026-06-17 |
| Hyperioxes | Magicka Dragonknight Solo Build | U50 | ESO | 2026-06-11 |
| Hyperioxes | Solo Werewolf Build | U50 | ESO | 2026-06-11 |
| Hyperioxes | Solo Magicka Sorcerer Build | U50 | ESO | 2026-06-11 |
What else drops here?
Other sets from Black Gem Foundry (3)
Where & how to get it
Where to get it: Black Gem Foundry
Access: Feast of Shadows — per UESP dungeon/trial/arena data; check the DLC checker.
Slots (6):
FAQ
What does Black Gem Monstrosity do?
Black Gem Monstrosity is a Monster Helm set with 2 bonus lines. At 2 pieces, its top bonus is: While in combat, casting a Soul Magic ability consumes a Soul Gem and gives you a Black Gemsplitter for 10 seconds. This effect can occur once every 6 seconds. Dealing Light or Heavy Attack damage fires the Black Gemsplitter at your target, dealing 17.1% of your target's Max Health as Magic Damage, up to 17100 Magic Damage. See the full table above for every piece tier.
Where do you get Black Gem Monstrosity?
Black Gem Foundry.
Is there a perfected version of Black Gem Monstrosity?
No — Black Gem Monstrosity has no perfected variant in the datamined data.
What slots can Black Gem Monstrosity go in?
Light(Head, Shoulders) Medium(Head, Shoulders) Heavy(Head, Shoulders).
How many pieces do you need for the full Black Gem Monstrosity bonus?
2 pieces equipped for the full set.