Azalin Rex

Arcane Mastery. Any saving throw against Azalin’s Arcane Explosion, Petrified Retribution, or a spell cast by Azalin is made with disadvantage.

Legendary Resistance (4/Day). If Azalin fails a saving throw, he can choose to succeed instead.

Rejuvenation. Azalin's body turns to dust when he drops to 0 hit points, and his equipment is left behind. Azalin reforms in 1d10 days, reviving with all his Hit Points. The new body appears within 5 feet of his phylactery, a platinum dragon’s head with ruby eyes.

Spell Resistance. Azalin has advantage on saving throws against spells and resistance against the damage from spells.

Turn Immunity. Azalin is immune to effects that turn undead.

Multiattack. Azalin makes two attacks, using Arcane Burst or Paralyzing Touch in any combination; he may also use Arcane Explosion, if available.

Arcane Burst. Melee or Ranged Attack Roll: +15, reach 5 ft. or range 120 ft. Hit: 88 Force damage.

Paralyzing Touch. Melee Attack Roll: +8, reach 5 ft. Hit: 15 (3d6) Cold damage, and the target must succeed on a DC20 Constitution saving throw or it has the Paralyzed condition for one minute. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Arcane Explosion (Recharge 4–6). Azalin creates a magical explosion of fire centered on a point he can see within 120 feet of him. Each creature in a 20-foot-radius sphere centered on that point must make a DC 23 Constitution saving throw, taking 60 force damage on a failed save, or half as much damage on a successful one.

Spellcasting. Azalin casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 23):

At Will: Animate Dead, Detect Magic, Dispel Magic, Levitate, Mage Hand, Telekinesis
2/Day Each: Globe of Invulnerability, Dimension Door, Otiluke's Freezing Sphere
1/Day Each: Dominate Monster, Finger of Death, Power Word Kill, Wish

Summon Undead (1/Day). Azalin magically summons five wights or wraiths. The summoned creatures appear in unoccupied spaces within 60 feet of Azalin, whom they obey. They take their turns immediately after Azalin. Each lasts for 1 hour, until it or Azalin dies, or until Azalin dismisses it as a bonus action.

Negate Spell  (Recharge 5–6). Azalin tries to interrupt a spell he sees a creature casting within 60 feet of him. If the spell is 3rd level or lower, the spell fails and has no effect. If the spell is 4th level or higher, Azalin makes an Intelligence check against a DC of 10 + the spell’s level. On a success, the spell fails and has no effect.

Petrified Retribution (Recharge 5–6). When he is hit by an attack, Azalin forces the attacker to make a DC 23 Constitution saving throw. On a successful save, nothing happens. On a failed save, the attacker is restrained as its flesh begins to harden and it must repeat the saving throw at the end of each of its turns. If it succeeds this save three times, the effect ends. If it fails three times, it is turned to stone and subjected to the petrified condition for 1 minute. The successes and failures don’t need to be consecutive; keep track of both until the target collects three of a kind. If the creature is physically broken while petrified, it suffers from similar deformities if it reverts to its original state.

Legendary Action Uses: 3. Immediately after another creature’s turn, Azalin can expend a use to take one of the following actions. Azalin regains all expended uses at the start of each of his turns.

At-Will Spell. Azalin casts one of his at-will spells (This spell can’t benefit from the Arcane Mastery or Overchannel traits)

Deathly Teleport. The lich teleports up to 60 feet to an unoccupied space it can see, and each creature within 10 feet of the space it left takes 11 (2d10) Necrotic damage.

Disrupt Life. Constitution Saving Throw: DC 20, each creature that isn’t an Undead in a 20-foot Emanation originating from Azalin. Failure: 42 (12d6) Necrotic damage. Success: Half damage. Failure or Success: Azalin can’t take this action again until the start of his next turn.

Refocus Arcana. Azalin recharges his Negate Spell or Petrified Retribution reaction and refreshes his reaction.