He frowned at her, but she didn't seem to be in distress. A hero had to be pretty good at picking up on that. He dug into the pouches on his belt and found what he was looking for.

"I believed you about the magic, right? Even before you showed me. Guess I'm not type O anymore. But I could feel it, that I'm different, from the moment I woke up on the beach. I just didn't know how. It's more of a confirmation than a shock."

Still a shock, though. His voice shook slightly, but it steadied when he said, "Hold still."

Of course he was concerned that his actual blood was changed, but he had blinders on when it came to helping someone else. He removed his gloves and held them under his arm. His right hand was covered in scars. He doused his fingers in rubbing alcohol and prepared to do the same to Luz's cut.