Delaware Smash

The user plucks his fingers creating a shockwave that does 20 dmg but breaks their fingers.
You can use this up to five times without an enchantment but if you have an enchantment on you can use this up to 10 times without breaking your fingers. 
Roll a 20 by 20 die to see how many times you can use this move
1-10:5 times
11-20:10 times
The user can also use his other arm
The fingers will heal in 2 rounds unless a healer heals it
every smash you do gives you 1 exhaustion