One additional Bloody Skull (up to three total) is spawned when Hellsnap is used.
These cast magic (tier 4 nukes, tier 3 -gas, single target and AoE debuffs, Drain, Aspir, Bio II, and Ice Spikes) and seem to almost ignore enmity generated through damage.
The only TP move used by Bloody Skulls is Corpse Breath.
Uses standard Dvergr TP movesThundris Shriek, Cackle, Hellsnap, Hellclap, Necropurge, and Necrobane
Unique TP move Dunur Strike does low 15' AoE damage (~500) and strips a single equipment slot at random (no encumbrance).
<50% HP: Unique TP move Bilrost Squall does high (500~1500) AoE damage (20' radial around Fjalar) and applies one of several enfeebles.