Large Celestial, chaotic good
Armor Class 16 (natural armor)
Hit Points 142 (15d10+60)
Speed fly +60, walk +30
Challenge 9
Saving Throws cha +7, con +8, wis +7
Skills perception +3
Damage Resistances radiant; nonmagic B/P/S attacks
Damage Immunities cold
Condition Immunities charmed, exhaustion, frightened, prone
Senses darkvision 120', passive Perception 13
Languages all, telepathy 120'
Celestial Weapons. Its weapon attacks are magical. When it hits with any weapon deals an extra 4d8 force (included below).
Immortal Nature. Doesn't require food drink or sleep
Magic Resistance. Advantage: spell/magic effect saves.
Reckless. At the start of its turn can gain advantage on all melee weapon attack rolls it makes during that turn but attacks vs. it have advantage until start of its next turn.
Relentless (Recharge: Short/Long Rest). If it takes 30 damage or less that would reduce it to 0 hp it is reduced to 1 hp instead.
Multiattack. Two Greataxe attacks. When Thunderous Roar is available it can use the roar in place of one Greataxe attack.
Greataxe. Melee Weapon Attack: +9 to hit, 5 ft., one target, 18 (2d12+5) slashing damage + 13 (3d8) force.
Thunderous Roar (Recharge 5-6). Unleashes a terrifying roar in a 30' cone. Each creature in that area: 36 (8d8) thunder (DC 16 Con half). In addition each hostile creature within 60' of archon that can hear it: DC 15 Wis save or be frightened for 1 min. Creatures in the 30' cone have disadvantage on this save. A frightened creature can re-save at end of each of its turns success ends effect on itself.
Rallying Roar. When it reduces a creature to 0 hp it can utter a triumphant roar. Each friendly creature within 60' of the archon that is frightened paralyzed stunned or unconscious has advantage on its next save. A friendly creature with o those conditions has advantage on its next attack roll. In addition each friendly creature within 60' of archon that can hear the roar gains 14 (4d6) temp hp.
Source: Tome of Beasts 3 · OGL/Open