Sedjinnu

Sedjinnu is an elder dragon related to Kirin and is fought late in Low Rank and onwards.

Physiology
Sedjinnu are most famous for their ability to transform into a phantasmic, misty, shadow state where its negates 50% of damage done to it and doesn't bleed from it which can confuse the hunter whether they are hitting it or not. They typically camouflage amongst herds of Kelbi related monsters as shadows and consume their blood without them knowing. They're vampiric in nature.

Behavior
Usually not interested in provoking other monsters and would typically avoid conflicts with monsters bigger than it but when faced with an enemy, it can use the dragon element, blind their opponents, use the blood they consumed from their prey as a weapon alongside suck out an enemies blood parts dry, making them feel like they're in a hot environment. They additionally can transform into a phantasmic state where they can negate attacks.

Abilities
It typically moves like a Kirin but has various more attacks such as the ability to unveil itself into a shadow form where it can inflict Blind to hunters, it can shoot out dragon element balls from its mouth and unleash dragon element combined with blood spyre-shaped projectiles from its horns. When they pin a hunter down, immobilise them by getting on top of them and then start sucking their blood, this can inflict Salty.

Habitat Range
Primarily nocturnal and additionally tends to be spotted in either wetland or temperate regions. Typically wherever herds of Kelbi can be found.

Ecological Niche
Despite being an elder dragon that can match powerful monsters such as Rathalos or Kirin. They typically tend to prey on the defenseless which typically include Kelbi to consume their blood. If desperate, they'll turn to Aptonoths.

Biological Adaptations
Disguises itself as a shadow amongst herds of Kelbi where they can freely consume blood from a Kelbi with the Kelbi not being aware until it drops dead from blood loss.