Template:5e Call of the Void
From D&D Wiki
When creating your character on level 1 you choose 1 indefinite madness from the indefinite madness table. On levels 5 and 10 you must make a d100 roll on the indefinite madness table and apply the resulting indefinite madness to your Void Elf. Upon becoming levels 15 and 20 depending on your subrace you make a saving throw of your primary stat + 1/2 your level to remove an indefinite madness from your character. At level 15 to be successful in the saving though you must beat a DC of 12 and a DC of 16 at level 20. You must always have at least 1 indefinite madness. The maximum amount of indefinite madness caused by Call of the Void is limited to 3.