A Vaal Hazak variant encrusted with spores that spew a torrent of toxic effluvium at any who draw close.
- MHWI Description

Blackveil Vaal Hazak is a Variant of Vaal Hazak, first introduced in Monster Hunter World: Iceborne.


Blackveil Vaal Hazak is similar to its counterpart in terms of general appearance. The main difference is that it's covered in strange moss-like pustules that emit Effluvium constantly. These pustules even go as far to cover its head, rendering it blind. Should they be removed/broken however, it is able to see again. Contrasting regular Vaal Hazak's dark red and silver coloring, Blackveil is a green and milky-white coloring.

Behavior and Abilities

Blackveil Vaal Hazak is a passive monster, that only attacks when provoked. Like its counterpart, it mainly uses its Effluvium as a form of attack, but also as a form of finding prey and infecting other monsters. The moss that grows on its body can be spread about to infect not just monsters but its surrounding area as well, transforming the environment into its ideal area of operation. One can tell if a Blackveil Vaal Hazak is near if the air is shrouded in a thick green fog of effluvial spores. The pustules seemed to have changed its breath from the stream of concentrated Effluvium into a smog-like gas that can adhere to the ground temporarily.

Game Appearances

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Main Series


  • None


  • None

In-Game Descriptions

Monster Hunter World: Iceborne
MHWI-Blackveil Vaal Hazak Icon.png A Vaal Hazak variant encrusted with spores that spew a torrent of toxic effluvium at any who draw close.

Element/Status Effectiveness

Element Effectiveness Status Effectiveness
Fire ★★ Poison
Water Sleep
Thunder Paralysis
Ice Blast ★★
Dragon ★★ Stun

Other Variants

Vaal Hazak

MHW-Vaal Hazak Render 001.png

Vaal Hazak is a grotesque elder dragon inhabiting the deepest part of the Rotten Vale. It uses the fatal vapor of the vale in what appears to be some kind of symbiotic relationship.


For more images, see Blackveil Vaal Hazak Photo Gallery


General Notes

  • Blackveil Vaal Hazak replaces the standard Vaal Hazak in Master Rank.
  • Blackveil Vaal Hazak's power-up mode differs from the regular species in which it uses Effluvium to rejuvenate the moss clusters on its head, torso and tail, instead of merely casting an Effluvial aura.
    • When rejuvenated, these mosses will puff out volatile Effluvium gas that does considerable damage while still able to infect hunters who aren't immune.
    • The puffing becomes increasingly violent during several of the dragon's attacks, making up-close onslaught dangerous.
    • Dousing the power-up will wither the mosses, rendering them harmless until rejuvenated again.
  • When left powered-up long enough, Blackveil Vaal Hazak will execute its ultimate attack where the mosses around its body swells and puff out lingering high concentration of Effluvium gas on random spots within the area.
  • Initially, it is immune to flash pods due to moss covering its eyes. Only after the head is broken do the eyes become exposed and it becomes vulnerable to flash pods.
  • Hunters who wish to avoid the slow AOE Ground Breath need only to clutch onto Blackveil Vaal Hazak's chest or forelegs, as doing so before it begins its attack renders you immune.
  • Blackveil Vaal Hazak can also perform a sweeping breath attack going from left to right, instead of right to left, like the standard species.
    • You can predict this by listening to the noise it will make, with the standard beam, you will hear Blackveil roar, and with the new attack, you can hear a whistling inhale sound.

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