Base Class: Bard
Overall, a Hellsinger bard would be a fearsome combatant, using the power of metal music to unleash devastating attacks against their foes. They would be able to support their allies with powerful buffs and deal devastating damage. The bard's music would be their primary weapon, and they would be able to channel their magic through it to achieve incredible feats of strength and destruction.
Hell Scream
As a bonus action you let out a guttural scream that puts fear in your enemies and inspires allies, all allies within 30 ft of you gain bardic inspiration and all enemies in 30 ft must make a wisdom saving throw (spell save dc) or be feared, they may roll the save again at the start of each of their turns. You may only use this feature once per long rest (additional uses at 5th level, 11th level, and 17th level)
Rhythm of the World
The hellsinger feels the rhythm of the world and moves with it, as a bonus action the hellsinger can enter a trance that lasts up to 1 hour and grants the hellsinger an extra 10 ft of movement, +2 ac, and an extra attack, the hellsinger may only use this feature once per long rest
Metal Apocalypse
When the Hellsinger activates this ability, they transform into a massive, demon-like creature with incredible strength and durability. While in this form, the bard gains the following abilities:
- resistance to cold, fire, lightning, and nonmagical attacks
- A flying speed equal to their walking speed.
- 1 size category larger with equipment growing with them
- as a bonus action in this new form you can let out a boom of sound and energy casting thunderwave as a spell-like ability
- when in this form as a reaction you can grant an ally temporary hitpoints or increase their damage output by using a bardic inspiration die