based on D&D 5th Edition
Ancient Brass Dragon
Gargantuan  Dragon , Chaotic Good

Armor Class 18  (natural)
Hit Points 262  (15d20+105)
Speed 40 ft. , burrow 30 ft. , fly 80 ft. , swim 20 ft.



STR DEX CON INT WIS CHA
27  (+8) 10  (0) 25  (+7) 16  (+3) 15  (+2) 19  (+4)
Saving Throws Dex +6, Con +13, Wis +8, Cha +10
Damage Immunities Fire
Senses blindsight,darkvision, passive Perception 24
Languages Common, Draconic
Challenge 20  (0 XP)
Legendary Resistance. (3/day) automatic succeed on save after failure.
Actions
Multiattack. Uses Frightful Presence, then makes one bite and two claw attacks.
Bite. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 19 (2d10 +8) piercing damage.
Claw. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 15 (2d6+8) slashing damage.
Tail. Melee Weapon Attack: +14 to hit, reach 20 ft., one target. Hit: 17 (2d8 +8) bludgeoning damage.
Wing Attack. DC 22 dexterity saving throw or take damage and knocked prone., for 15 (2d6+8) bludgeoning damage in ft. Area
Frightful Presence. DC 18 Wisdom saving throw, frightened. Save at end of each turn, successful save creature becomes immune. in 120 Area
Fire Breath. (Recharge 5-6) DC 21 Dexterity saving throw, half damage on successful save, for 56 (16d6) fire damage in 90 ft. Cone
Sleep Breath. (Recharge 5-6) DC 21 Constitution saving throw, on failure, creature falls unconscious. Saving throw at end of turn or taking damage to wake. in 90 Cone