Nathan's Luck

due to mysterious anomalies you receive advantage on all saving throws, this is unknown but it does come in handy.

every time you say "this can't get any worse" or anything along those lines you make things worse whether it being summoning new enemies or having the roof break above you (depends on the dm).

every time you make a skill check to transverse an obstacle, you must roll twice. if both dice land higher than the intended scoring nothing happens, on the other hand if you one of the dice succeeds and the other fails you must make a dex saving throw to try and save yourself from falling or whatever happens to you if you fail halfway through.

you also have a disadvantage on stealth due to the recklessness of your character.