Anyone wanting a ton of fun ideas for variant liches should check out Pointy Hat’s channel, he’s doing a whole series on custom lich types for different kinds of spellcaster (and he also just did a Barbarian Lich type, the Scourge, so he’s branching out to non-spellcasters too).
That guy is thinking about an Intoner, the bardic equivalent of a lich.
Anyone wanting a ton of fun ideas for variant liches should check out Pointy Hat’s channel, he’s doing a whole series on custom lich types for different kinds of spellcaster (and he also just did a Barbarian Lich type, the Scourge, so he’s branching out to non-spellcasters too).