Dungeons & Dragons 2024 (D&D) Monster/NPC: Adult Necrotic Dragon

Traits

Legendary Resistance (3/Day, or 4/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.   Sunlight Sensitivity. While in sunlight, the dragon has Disadvantage on ability checks and attack rolls.

Actions

Multiattack. The dragon makes three Rend attacks.   Rend. Melee Attack Roll: +10, reach 10 ft. Hit: 12 ( 2d6+5 ) Slashing damage plus 3 ( 1d6 ) Necrotic damage.   Anguished Breath (Recharge 1d6>=5 ). Wisdom Saving Throw: DC 17, each creature in a 60-foot Cone. Failure: 54 ( 12d8 ) Necrotic damage. Success: Half damage. Failure or Success: A Humanoid reduced to 0 Hit Points by this damage dies, and a Shadow rises from the corpse. The shadow is under the dragon's control and shares the dragon's Initiative count but acts immediately after the dragon.   Spellcasting. The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 17, +9 to hit with spell attacks):   At will: Detect Magic (Detect Magic), Bestow Curse (Bestow Curse), Ray of Sickness (Ray of Sickness) (level 3 version)
1/day each: Summon Undead (Summon Undead), Blight (Blight)