You have the innate sense that if something can go wrong, it will. Due to this, for every check and saving throw you must roll 1(d6), then follow the table below. Because you are so prone to accidents, your body has naturally toughened up, take a +1 to your CONSTITUTION stat. (The feat will add it on automatically)
Table: work with your DM to determine the outcome:
If "1" is rolled, the unlucky will affect the player. (Magnus)
If "2" is rolled, a minor unlucky affect will happen to a random ally within the DM's discretion.
If "3-5", add that to the roll.
If "6" the unlucky will affect an opponent.
Source: Dj's Library of Dumb****ery