The cover really sells this one:

Is that all the retellings of Nightcrawler's origin I could find? Um, maybe; and we did skip some like the Ultimate X-Men version. Still, bits and pieces of it are seen here and there, like, um, here: Classic X-Men #15, "Armageddon Now!" Written by Chris Claremont, pencils by John Byrne, inks by Terry Austin. Of course, this is a reprint of X-Men #108, but it has an Art Adams cover where Nightcrawler is staked by his teammates.

Still, with that, I'm on vacation! Normal programming resumes...Monday, actually; posts are already set up, I just won't be handy. Have a good week!