Rena cast a simple healing spell on him so they did not have to waste any of their potions. Potions were usually reserved for really serious injuries or even near-death injuries when combined with healing magic. Lucius was thankful that the spines had not penetrated a major artery, or the potion and magic combination might have been necessary.
He then looked down at his hand and noticed a residual amount of mana flickering like lightning down his fingertips. It was only at the last minute, but it sounded like Luz granted him enough strength to finally activate his Thunder magic.
That was great and all… but why was Luz able to do that in the first place? It did not sound like the first time he used power from Luz, the time that made him lose permanent access to the Beast Arts.