Energize - SU

You can absorb harmful energies, converting them to potential energy for use in entropic manipulation. As a reaction when you’re hit by an attack or effect that deals energy damage, you can gain 1 Entropy Point and attempt a Fortitude save (DC = 10 + 1-1/2 the CR or level of the attacker) to take half damage. Once you use this ability, you can’t use it again until you regain Stamina Points during a 10-minute rest.