Huge celestial (fallen), lawful evil
Armor Class 21 (plate)
Hit Points 310 (20d12 + 180)
Speed 50 ft., fly 150 ft.
STR 30 (+10) DEX 22 (+6) CON 28 (+9) INT 25 (+7) WIS 23 (+6) CHA 30 (+10)
Saves Int +14, Wis +13, Cha +17
Skills Intimidate +17, Religion +17
Damage Resistances radiant; bludgeoning, piercing and slashing from nonmagical weapons
Damage Immunities fire, necrotic, poison
Condition Immunities charmed, exhaustion, frightened, poisoned
Senses truesight 120 ft., passive Perception 16
Languages all, telepathy 120 ft.
Treasure greatsword, Falchion of Gian ben Gian, longbow, +3 plate armor
Challenge 23 (50,000 XP)
Fallen Weapons. Eblis' weapon attacks are magical. When Eblis hits with any weapon, the weapon deals an extra 3d8 radiant damage and 3d10 fire damage (included in the attack).
Divine Awareness. Eblis knows if he hears a lie.
Innate Spellcasting. Eblis' spell casting ability is Charisma (spell save DC 25). He can innately cast the following spells, requiring no material components:
At will: detect evil and good, invisibility (self only)
3/day each: blade barrier, dispel evil and good, fire storm
1/day each: commune, control weather
Magic Resistance. Eblis has advantage on saving throws against spells and other magical effects.
Multiattack. The solar makes two greatsword attacks or two Falchion of Gian ben Gian attacks.
Greatsword. Melee Weapon Attack: +17 to hit, reaah 5 ft., one. target. Hit: 31 (6d6 + 10) slashing damage plus 13 (3d8) radiant damage and 16 (3d10) fire damage.
Falchion of Gian ben Gian. Melee Weapon Attack: +18 to hit, reaah 5 ft., one. target. Hit: 32 (6d6 + 11) slashing damage plus 13 (3d8) radiant damage and 22 (4d10) fire damage.
Slaying Longbow. Ranged Weapon Attack: +13 to hit, range 120/600 ft., one target. Hit: 19 (3d8 + 6) piercing damage plus 13 (3d8) radiant damage and 16 (3d10) fire damage. If the target is a creature that has 190 hit points or fewer, it must succeed on a DC 15 Constitution saving throw or die.
Flying Sword. Eblis releases his greatsword to hover magically in an unoccupied space within 5 feet of him. If Eblis can see the sword, Eblis can mentally command it as a bonus action to fly up to 50 feet and either make one attack against a target or return to his hand. If the hovering sword is targeted by any effect, Eblis is considered to be holding it. The hovering sword falls if the Eblis dies.
Eblis 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. Eblis regains spent legendary actions at the start of his turn.
Teleport. Eblis magically teleports, along with any equipment he is wearing or carrying, up to 120 feet to an unoccupied space he can see.
Searing Burst (Costs 2 Actions). Eblis emits magical, infernal energy. Each creature of his choice in a 10-foot radius must make a DC 24 Dexterity saving throw, taking 18 (4d8) fire damage plus 18 (4d8) radiant damage on a failed save, or half as much damage on a successful one.
Blinding Gaze (Costs 3 Actions). Eblis targets one creature it can see within 30 feet of it. If the target can see him, the target must succeed on a DC 25 Constitution saving throw or be blinded until magic such as the lesser restoration spell removes the blindness.
Eblis wields the Falchion of Gian ben Gian as a huge greatsword. This magic weapon has a +1 bonus to attack and damage rolls and additionally deals 1d10 fire damage. Eblis also wears +3 plate armor.