How about this fore a feat for DnD 5e?
Cruel Daggers
You know how to make the daggers cut deep! Gain the following:
- Increase your dexterity by 1, to a maximum of 20.
- When you use a dagger, the dagger does 1d6 slashing or piercing damage instead of its normal 1d4.
Thoughts?
Throat Punch Games 