In a flash, Merlin rushed to him, grim-faced and healing magic at the ready. Even if Castiel hadn't coughed up blood, he'd forgotten that healers could sense the injuries to some extent. Even while his hand hovered over Castiel's chest, already mending the puncture and the bone-breaks, he chose to watch Castiel reproachfully instead of keeping his eyes on the spot of healing.

"Looks like that didn't go so well," he remarked carefully once the healing was done. "What happened just now?"