Blood Spikes

Spikes that attack to armor that has been created from blood of wounded and fallen living things. Blood spikes deal damage back to the individual that had attacked the wearer dealing half the damage die worth of damage along with the same number of dice. This ability can only be used three times per battle, and only once per turn. (ex: if hit by 3d8, the spikes deal back 3d4, second turn it deals 2d4, etc.)