Undead Shambling Mound of Bard Bodies

Cacophony of Discordant Voices  At start of each of the shambling bard's turns, each creature in a 30 foot radius originating from the mound must make a DC 15 Constitution or Wisdom saving throw based the table below. On a failed save, a creature is affected by the song on the table. The affect will remain until the start of the shambling bard's next turn. Roll a d20 to determine the song. Deafened creatures are immune to this affect.

1. American Pie -- "the day the music died" -- Wisdom Save -- Dispel Magic on all active spells on characters within radius. For spells of fourth level or higher, the shambling bard's makes their ability check using Charisma.

2. Toss a Coin to your Witcher -- Wisdom Save -- Entice Gift -- On their next turn, they move adjacent to the mound and present the sambling bard's with whatever objects are in their hand which the mound accepts as a reaction. If it is a shield is offered, the character is automatically grappled as a reaction.

3. Never Gonna Give You Up/Safety Dance -- Wisdom Save -- Otto's Irresistible Dance -- You are overcome with the music and desire to dance. All movement  is used to dance in place, with disadvantage to dexterity saves and attack rolls. While affected, others have advantage on attack rolls. As an action, they can repeat the wisdom save to break free. Creatures immune to the charmed condition are not affected.

4. It's Raining Men -- Constitution Save -- Reverse Gravity limited to 20 ft -- All creatures fall upwards 20 feet, if you strike a ceiling, you take falling damage. At the start of the shambling bard's next turn, they fall the distance back to the ground.

5. Let the Bodies Hit the Floor -- Constitution save -- save vs prone

6. I'm a Lonesome Fugitive -- Wisdom save -- save vs restrained

7. Hallelujah/Careless Whisper -- Wisdom Save -- Dissonant Whispers -- 2d8 Psychic damage, must use reaction to move as far from the shambling bard's as physically possible. They do not move into obviously dangerous ground.

8. Knockin' on Heaven's Door -- Constitution Save -- 2d8 radiant damage

9. I just Died in your Arms Tonight -- Constitution Save -- 2d8 necrotic damage

10. Bringing Sexy Back -- Wisdom Save -- save vs charmed, and must use movement  on their turn only approach the shambling bard's, and need to present best pick up line to shambling bard's.

11. Sexual Healing -- No Save -- Shambling Bards regain 2d8 hp

12. Sexy and I know It -- No Save -- Shambling Bards preen and prance with increased fervor, and do additional 1d8 damage with slam attacks. 

13. Sabotage -- Enemies Abound -- Wisdom Save -- Creatures automatically save if they are immune to being frightened, on a failed save, they regard all creatures they can see as enemies until the start of the mound's next turn. Each time they take damage, they can repeat the saving throw. It must choose the target at random to attack. If the "enemy" provokes and opportunity attack, it must take the attack if it is able to.

14. Bohemian Rhapsody -- Wisdom Save -- They are charmed. Charmed creatures are compelled into singing along as their action. On their turn, they must sing along with the shambling bards. You automatically know all the words perfectly. If they take damage they get a new saving through.

15. Don't Go Breaking My Heart -- No Save -- Shambling Bards are immune to critical hits

16. I Want It That Way/Sound of Silence -- No Save -- The entire area is affected by magical Silence. The only sound that can be heard in the area, is the singing of the shambling bards.

17. Bye Bye Bye -- Wisdom Save -- They are banished to a harmless demi plane filled with cats. While they are there, the character is incapacitated by being buried in cats. At the beginning the shambling bard's next turn, they return to the space the left of the next unoccupied space. Covered in cat hair.

18. Bed of Roses -- No Save -- Ground twists and sprouts hard spikes and thorns. The are becomes difficult terrain to all creatures except the mound. When a creature moves into or within the area, it takes 2d4 piercing damage for every five feet of movement. Shambling bards are immune to this affect. Limited to area of Cacophony

19. Welcome to the Jungle -- No Save -- Ground twists and sprouts thick vines and foliage. The are becomes difficult terrain where one foot of movement takes four feet of speed to all creatures except the mound. Shambling bards are immune to this affect. Limited to area of Cacophony

20. Paint it Black  -- Constitution Save on the Creature's Turn -- Area is filled with magical darkness and is difficult terrain. A creature that begins it's turn or enters the area on it's turn must make a con save. On a failed save, they take 2d8 cold damage. If a creature that failed the save ends their turn in the area, they take 2d8 acid damage. The shambling bards are immune and can see through the magical darkness. (Hunger of Hadar)

 Bonus songs that can be changed for other songs:
21. Sunglasses at Night/She Blinded Me with Science -- Constitution Save -- Save vs Blindness

Necrotic Absorption. Whenever the undead shambling mound is subjected to necrotic damage, it takes no damage and regains a number of hit points equal to the necrotic damage dealt.

Multiattack. The shambling bard's makes two slam attacks. If both attacks hit a Medium or smaller target, the target is grappled (escape DC 15), and the shambling bards uses its Engulf on it.

Slam. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage.

Engulf. The shambling bards engulfs a Medium or smaller creature grappled by it. The engulfed target is blinded, restrained, and unable to breathe, and it must succeed on a DC 15 Constitution saving throw at the start of each of the mound's turns or take 13 (2d8 + 4) bludgeoning damage. If the mound moves, the engulfed target moves with it. The shambling bards can have an unlimited number of creatures engulfed at a time.

It can cast Silvery barbs once per turn as a reaction.