Abnormal Body. Abaddon doesn't need to eat, drink, or sleep and is immune to spells and effects that would alter its form. It can spend half his movement to squeeze through any hole 5 feet or wider.

Aura of Illumination and Dispelling. The space within 120 feet of Abaddon is bathed in bright light, and magical darkness in that area is dispelled. The aura also reveals invisible creatures and objects, and ends any illusions in the area.

Aura of Truth. Creatures within 120 feet of Abaddon cannot speak a deliberate lie. A creature aware of this effect is under no compulsion to speak, but if they do, they must speak the truth.

Freedom of Movement. Abaddon ignores difficult terrain, and magical effects can't reduce his speed or cause him to be restrained. He can spend 5 feet of movement to escape from nonmagical restraints or being grappled.

Immunity to Imprisonment. Abaddon cannot be sealed away or trapped through non-magical or magical barriers, or even imprisoned.

Immunity to Certain Attacks. Fiends, Undead, and Evil-Aligned characters cannot hit Abaddon. Constructs and other Angels ignore this effect.

Legendary Resistance (5/day). If Abaddon fails a saving throw, he can choose to succeed instead.

Magic Attacks. Abaddon's attacks are all magical.

Radiate Pain. At the start of Abaddon's turn, all enemies within 10 feet of him suffer 33 (6d10) psychic damage.

Reflective Carapace. When Abaddon is targeted by a ranged spell attack, roll a d6. On a 1, the attack hits as normal. On the roll of 2 to 4, Abaddon is unaffected. On the roll of a 5 or 6, Abaddon is unaffected and the effect is reflected back at the caster as though it originated from the Abaddon, turning the caster into the target.

Telepathy. Abaddon has telepathy up to a range of 120 feet.

Multiattack. Abaddon makes one Menacing Strike attack, one Blast attack, one Snipe attack, and two Barrage attacks.

• Menacing Strike. Melee Weapon Attack: +23 to hit, reach 20 ft., one target. Hit: 28 (4d8 + 10) bludgeoning/piercing/slashing damage + 11 (2d10) psychic damage. Upon being hit, the target must succeed on a DC 28 Wisdom saving throw or become paralyzed for the next minute. The target re-rolls the saving throw at the end of their turn; on a successful roll, the effect ends.

• Blast. Ranged Weapon Attack: +19 to hit, reach 60/150 ft. Hit: Target suffers 23 (3d10 + 6) slashing damage, and all other characters within 30 feet of them suffer 14 (3d8) fire damage.

• Snipe. Ranged Weapon Attack: +19 to hit, reach 600/1500 ft., 15-ft. cylinder. Hit: Target suffers 45 (6d12 + 6) piercing damage. This attack critically succeeds on a 19 as well as a 20.

• Barrage. Ranged Weapon Attack: +19 to hit, reach 100/250 ft., one target. Hit: 17 (3d6 + 6) bludgeoning damage and is pushed 5 feet back.

• Dominate. Melee Weapon Attack: +23 to hit, reach 15 ft., one target. Hit: The target must succeed on a DC 28 Charisma saving throw or be possessed by Abaddon for the next minute. While possessing a character, Abaddon has complete control over the target's movement, actions, bonus actions, and reactions. Possessed characters have advantage on their attack rolls and can re-roll their saving throw at the end of their turn. On a successful roll, the effect ends. A successful save against Dominate renders the victim immune to possession by Abaddon for the next hour.

Cindering Flames. Up to a range of 90 feet. Abaddon can throw a powerful Flaming Radiant Ball. Anyone within a 20-foot sphere must make a DC 28 Dexterity saving throw or take 4d8 fire, 4d8 radiant, 4d8 psychic, and 4d8 force damage.

Armor Shift. When a creature hits Abaddon with a ranged attack, he gains a +4 bonus to his AC until the start of his next turn.

Dominant Presence. When a creature hits Abaddon with a melee attack, he can use Dominate against the attacker.

Abaddon can take 5 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. Abaddon regains spent legendary actions at the start of his turn.

Ambush. Abaddon magically teleports, along with any equipment he is wearing or carrying, up to 120 feet to an unoccupied space he can see. He then makes a Menacing Strike attack.

Blitz. Abaddon makes a Barrage attack. If Abaddon has already used a Blitz legendary action this combat round, he makes one more Barrage attack than he did with the previous Blitz.

Drain (Costs 2 Actions). The creature possessed by Abaddon takes 44 (8d10) psychic damage, and Abaddon regains that many hit points.

When Abaddon drops to 0 hp. His HP resets back to full and he gains his most powerful mythic Action and Aura. He can only use his actions once per turn.

Penance Stare. This action auto-hits anyone without a Good Alignment or an Angel/Celestial Heritage. Good-Aligned characters and those who are angels and/or with a Celestial Heritage are immune to this attack. Anyone who gets hit by this attack takes 300 damage. If you kill a target with this attack, their souls are destroyed and only a wish spell can revive them.

No Sinners Allowed. Anyone within 120 feet of Abaddon who isn't an angel, has Celestial Heritage, or a Good-aligned character is incapacitated while they remain inside the aura.