Once again, need appeared to be doing the trick, for the moment... or at least Thor hadn't yet knocked him away. With his eyes closed, focusing almost entirely on the magic, Loki couldn't see the improvements in Valkyrie or hear the reactions.

He focused on the most severe damage first: the ruptured organ, the internal bleeding, the concussion. The ribs and glass-cuts could heal themselves with time if they had to, but the rest was dangerous to leave and needed to be handled while the magic had decided to work.

A fair amount of the energy for healing came from the person being healed, but the rest came from Loki. When he reached the end of what power he had to offer, Valkyrie's internal damage and concussion had been healed, and the broken ribs were about half-healed (they'd be tender but no longer in danger of shattering outright or impaling lungs), but the purely external injuries, the cuts from falling glass and some incipient bruising, were still there.

It was far better than he'd thought he'd do, but he was almost too exhausted to be proud of it.