Blackveil Vaal Hazak

Effluvium sickness. If an enemy is within a radius of 20ft, he must make a DC18 DEX saving throw if he fails, he will catch effluvium (in case he already has this doesn't effect).

Effluvium expansion. The area where it was located is left with residues of the effluvium during the following 4 turns.

Multiattack. The dragon can use its Frightful Roar. It then makes three attacks: one with its bite and two with its claws.

-Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: (2d10 + 10)  piercing damage plus (3d6) necrotic damage.

-Claw. Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: (2d6 + 10) slashing damage.

Effluvium Armor. If a enemy makes a melee attack, the enemy must make a DC 18 STR saving throw in a failure the enemy have the effect of effluvium (in case he already has this doesn't effect).

Blackveil Vaal Hazak has 3 legendary actions and regenerates one at the end of his turn. (Limit stock of 3 legendary actions)

Effluvium Breath (Costs 2 Actions). Blackveil Vaal Hazak prepare her breath for one turn and in the next perform a necrotic breath with effluvium spores in a range of 60ft the creatures that are in the attack range must perform a DC21 DEX saving throw or take (7d10 +20) of necrotic damage and take the effect of the effluvium.

Effluvium Extraction (Costs 2 Actions). Blackveil Vaal Hazak extracts the effluvium spores from the enemies in a range of 60ft, being immobilized for that turn and at the beginning of the next one heal an amount of (X)d6 (X is the amount of effluvium spores that extract form the enemies)

Blackveil Vaal Hazak has 1 mythic action and regenerates one in the dawn

Effluvium (Costs 1 Action). The enemy makes a d4 throw to take one of the effects below
1-.The maximum amount of hit points of the enemy is reduced by 50% and the lost maximum hit points cannot be regained while under during the duration.
2.-The enemy is seriously poisoned and takes 2d6 of damage.
3.-Reduce the speed of the enemy in 50%.
4.-Reduce armor by -2 and take twice of the damage in the next attack.
At the start of the affected creatures turn, it may make a DC 17 CON saving throw. On a successful save, Effluvium ends.