Unlucky

You have inexplicable bad luck that seems to kick in at just the worst moment.

•  3 times per long rest, your DM may choose to make an attack, skill check, or save be rolled with disadvantage as your bad luck acts up.

FLAW. This is a flaw feat. At your DM's discretion, you may take this feat at level 1. If you do, you may also gain a feat, or increase two of ability scores by +1 (or one by +2).