Fortuna's Favor

''Sometimes something has the potential to go wrong, but it doesn't. A stray breeze correcting an arrow, clouds covering the moon when you're trying to be stealthy, a passerby catching you when you fall. Things have an almost super natural way of working out for you. You'd think Fortuna herself blessed you but what good would that do if she's blind. Either way, you always say a quick word or two for her, she might be blind but she's not deaf.''

+1 Rapier or Longsword, mithril, requires attunement by a follower of Fortuna.
This blade features a blade of pure mithril and a pommel and guard made of gold, in the shape of the number seven.

Whenever you roll a 7 on the d20 for a check or saving throw, you may reroll it and keep the new result, unless it's another 7, in which case you may roll it again. If it is another 7, you succeed automatically in a spectacular fashion.

You critically hit on attack rolls on a 7 as well as 20.

Your damage dice explode on a 7. (Roll again and add it to the total, continuing until you dont hit a 7)