These use a basic melee attack that has 100% chance to knockback and 100% increased knockback distance.
Sadly they do not use their buff spell at all.
These have 90% the life of a Primal Crushclaw in spectre form.
And over double that in corpse form, sadly they do not show up in your desecrate pool.
These have 20% innate elemental resistances.
They also have very high innate armour.
These can be found in the Allflame ember of the Rongokurai.
This video was recorded in patch 3.24.