Detroit Smash

The user pulls back his fist and throws a punch, creating a Straight shockwave dealing Dmg.If the user does not have an enchanment on you will break your bones and you cant use your swords and stuff Butt you will be able to use other spells.
Make a  20 by 20 roll If its:
1-10:it does 20
11-20:it does 40 dmg
roll a 20 by 20 die to see how many you can use 
1-5: 2 smashes
6-11:4 smashes
12-20:5 smashes
The user can also create a downsmash to deal dm or cause smoke for his party to escape
If the user has an enchantment on, you can use this 5 times without breaking your bones,If the user does not have an enchantment on you can only use this 2 times without breaking your bones
The user can also use his other arm
The bones will heal in 2 rounds unless a healer heals it
every smash you do gives you 1 exhaustion