b'Cosmic Symphony \n'b'  Large   celestial ,  unaligned  \n'b'  Armor Class  18 (natural armor)  Hit Points  200 (16d10 + 112)  Speed  0 ft., fly 60 ft. (hover)\n'b' STATS STR: 19 (+4) DEX:  26 (+8)  CON:  25 (+7)  INT:  2 (\xe2\x80\x934)  WIS:  21 (+5)  CHA:  18 (+4)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Saving Throws   Wis  +10,  Cha  +9  Skills   Perception  +10  Damage Resistances  bludgeoning, piercing, and slashing from nonmagical attacks  Damage Immunities  radiant, thunder  Condition Immunities   deafened ,  exhaustion ,  grappled ,  paralyzed ,  petrified ,  poisoned ,  prone ,  restrained ,  stunned   Senses  truesight 120 ft., passive  Perception  20  Languages  understands all languages but can\xe2\x80\x99t speak  Challenge  15 (13,000 XP)  Proficiency Bonus  +5 \n'b' SPECIAL TRAITS \n'b'\n'b'  Invisible . The cosmic symphony is  invisible . \n'b'  Legendary Resistance (3/Day) . If the cosmic symphony fails a saving throw, it can choose to succeed instead. \n'b'  Magic Resistance . The cosmic symphony has advantage on saving throws against spells and other magical effects. \n'b'\n'b' ACTIONS \n'b'\n'b'  Multiattack . The cosmic symphony can use Universal Music. It then makes one Discordant Wave  attack  and one Slam  attack  or two Discordant Wave attacks. \n'b'  Discordant Wave .  Melee or Ranged Spell Attack : +10 to hit, reach 5 ft. or range 60/120 ft., one target.  Hit : 27 (5d8 + 5) thunder damage. The target and each creature within 10 feet of it must succeed on a DC 18  Constitution  saving throw or become  deafened  until the end of its next turn. \n'b'  Slam .  Melee Weapon Attack : +13 to hit, reach 5 ft., one target.  Hit : 24 (3d10 + 8) bludgeoning damage plus 22 (5d8) thunder damage. \n'b'  Universal Music . Each creature of the symphony\xe2\x80\x99s choice within 120 feet of the cosmic symphony must succeed on a DC 18  Constitution  saving throw or be  incapacitated  for 1 minute. A creature that fails the saving throw by 5 or more is  stunned  for 1 minute instead. A  stunned  or  incapacitated  creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature\xe2\x80\x99s saving throw is successful or the effect ends for it, the creature is immune to the cosmic symphony\xe2\x80\x99s Universal Music for the next 24 hours. \n'b'  Celestial Crescendo (Recharge 5\xe2\x80\x936) . Sound waves explode from the cosmic symphony. Each creature within 30 feet of the symphony must make a  Constitution  saving throw. On a failure, a creature takes 45 (10d8) thunder damage and is  deafened  for 1 minute. On a success, a creature takes half the damage and isn\xe2\x80\x99t  deafened . A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. \n'b'\n'b' LEGENDARY ACTIONS \n'b' The cosmic symphony can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature\xe2\x80\x99s turn. The cosmic symphony regains spent legendary actions at the start of its turn. \n'b'\n'b'  Fly . The cosmic symphony flies up to half its flying speed without provoking opportunity attacks. \n'b'  Major Chord (Costs 2 Actions) . The symphony regains 18 (4d8)  hp . \n'b'  Minor Chord (Costs 2 Actions) . Each creature within 10 feet of the symphony must succeed on a DC 18  Constitution  saving throw or take 9 (2d8) thunder damage. \n'b'\n'b' ABOUT \n'b' Humming reverberates through the air as spinning rings of rainbow light shimmer in the sky. \n'b' A cosmic symphony is invisible, being made of heavenly sound, but those capable of seeing invisible creatures see an angelic being shimmering with rainbow-colored light. \n'b'  Music of the Spheres . Cosmic symphonies form only when a remarkable event upsets the predestined rhythms of the universe. This upset reverberates as a living symphony that exists for as long as it takes to play through its unique musical movements. \n'b'  Soul Music . The music emitted by the cosmic symphony is felt rather than heard. Any creature with a soul can perceive the symphony\xe2\x80\x99s music, regardless of if it can normally hear sound. Consequently, the majority of fiends and celestials are unable to hear the symphony.'