Sunlight Sensitivity. While in sunlight, the dragon has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 3) piercing damage plus 3 (1d6) necrotic damage. On a successful bite attack, the dragon regains health equal to necrotic damage dealt and the target creature must make a DC 16 Constitution saving throw. If it fails, it has disadvantage on all Strength based ability checks and saving throws until the end of its next turn. Also, any attack made using Strength deals half its normal damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: (2d6 + 3) slashing damage.

Rotting Breath (Recharge 5–6). The dragon exhales a black mist in a 30-foot cone. Each creature in that area must make a DC 16 Constitution saving throw, taking 56 (14d6) necrotic damage on a failed save, or half as much damage on a successful one. If a creature fails this save, their hp maximum is lowered by an amount equal to half the damage taken. If a creatures maximum hp is lowered to 0 by this effect, they die instantly. This effect lasts until they receive a long rest.

Shadow Stealth. While in dim light or darkness, the dragon can hide as a bonus action.

Shadow movement. The dragon can double its walking speed for this turn.

Void Shift (Recharge 5-6). After receiving damage from any source, the dragon conjures a black mist to surround the area within a 30 foot radius, imposing disadvantage on all attacks where the attacker relies on sight made against creatures within the mist until the start of its next turn. There is no light within this area, and it cannot be dispersed by any light, magical or not