You can save someone. You can save yourself, and me, right now. And then you can go back into the field once you're healed up and save as many people as you want.

[He reaches out at last to touch Loki's arm, just above where it's bleeding. He said it didn't hurt, but... if he could feel it, would he be able to see?]

You're the only one with the power to do it. Without your help, we'll be trapped like this until we're both dead. Until she kills us.