Gnat's Determination V2

1. You can add 5 to any attack roll you make, potentially making a miss into a hit. You can use this ability a number of times per day equal to your proficiency. You can use this ability more than once per attack roll with a DC 15 Constitution saving throw.

2. Once a day, after a successful attack roll or saving throw, gain temporary hit points = to level + charisma modifier + half of last damage recieved.

3. If you were to fail a saving throw, you can choose to reroll it, keeping the second roll. This ability can be used a number of times per day equal to half your proficiency bonus rounded down.