Arcane Feedback

Arcane Feedback allows a player to use up to a level 5 spell without having the spell slot available. The person must know the spell to be able to do it. The caster casts the spell and then rolls a dice based on the level of the desired spell. The result of the die is the percent of total health damage you take from the arcane feedback of using the spell. For example if you cast a level 2 spell that you had prepared but ran out of slots for you would roll 1d4 and if you had 10 life when fully healed and got a 4 on your roll that would be 40% of your total health so 4 damage in this case to you.  You may also choose to cast a spell you know but did not have prepared for the day by doubling the percent dice, for example in the previous example it would be a d8 instead of a d4. 

Level 1= 1d4 odds/evens up to 20%

Level 2= 1d4 up to 40%

Level 3= 1d6 up to 60%

Level 4= 1d8 up to 80%

Level 5= 1d10 up to 100%