Glorfindel....he also pushed himself a lot harder than maybe he should have. So here's the thing about elves. The older they get, the more ethereal they get as their Spirit connects with the Song. When he gets back to the Train, he will still glow softly regardless of what he does, and he will be mildly transparent.
If anyone is interested in helping him reconnect with the material world, I will be posting a top level for him in the Conclusion in a moment or three.