Valgumer the Demon of Death

Legendary Resistance (3/Day). If the Demon of Death fails a saving throw, it can choose to succeed instead.

Legendary Regeneration (3/Day). If the Demon of Death get's down to 25% HP or less it will regenerate to full HP.

Magic Resistance. The Demon of Death has advantage on saving throws against spells and other magical effects.

Scales of Power. Any non-magical weapon attack against the Demon of Death will break.

Siege Monster. The Death Demon deals double damage to objects and structures.

Multiattack. The Death Demon makes three claw attacks.

Claw. Melee Weapon Attack: +15 to hit, reach 15ft, five targets that are in area. Hit: 30 (4d8 + 10) slashing damage.

Flames of Valgumer. Ranged Weapon Attack: +10 to hit, range 100ft, all targets in area. Hit: 40 (4D12 + 10) magical flame damage.

Valgumer's Grasp. Melee Weapon Attack: +15 to hit, reach 30ft, single target. Upon hit the target is grappled and restrained.

The Demon of Death can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Death Demon regains spent legendary actions at the start of its turn.

Attack. The Death Demon makes one claw attack.

Move. The Death Demon moves up to half its speed.

Army of Valgumer (1/Day). The Death Demon summons 100 of Valgumer's Followers that vanish once Valgumer is defeated.

Deathly Sight (1/Hour) (3 actions). The Demon of Death target's a creature and deal's 100 damage to the target, if the target falls unconscious they will have disadvantage on their death saving throw.