1. Roll 3d6 and drop the lowest for each Ability Score (so keep two of the dice | Min: 2, Average: 8.5, Max: 12)
2. At every level up, add one to any Ability Score
3. At every Ability Score Increase level for your class, take a feat rather than get the +2 to Ability Scores
4. You can re-roll one of your ability scores, but you MUST take the re-roll, even if it's worse!