Daily Punch 8-30-17 Fatal Superiority feat for DnD 5e

Let’s leave the warlock for a second and move on to the fighter. It’s nitch, but this is something that the battle master might want.

Fatal Superiority

You are a master of combat who is fueled by death. Gain the following:

• Increase your Dexterity or Strength by 1, to a maximum of 20.
• Add 1 to your superiority dice.
• When you kill an enemy, regain one superiority dice instantly. There is no limit to the number of superiority dice you can gain this way, up to your maximum number.

Thoughts?