That unique looking helmet is actually an important part of the story

Always pay attention to a unique looking helmet. If I've learned anything, that's the most important thing of all.

Now I want to read this, but it doesn't appear to be on Comixology.

That's the beauty of old comic book covers: they were interesting and prompted readers
to look inside.

It was a form of genius. You automatically feel like you need to read the thing just to see what was going on, even if you know it won't make sense or have any real meaning in the general scheme of things. It doesn't matter. You just want to find out what's going on.

Future Luthor runs the successful Superman museum, and decides to punish Superboy for helping the owner of the failing Superboy museum.

"I can't explain, Lex… but thanks! Your mirage-making helmet has cleared my
conscience! I'm happy as a Clark! I mean… "Lark… Kent." Damn it!"

Those Luthors and their novelty headgear.

Or maybe Byrne is teasing that future Luthor is really Ignis?

Blasphemy!

I can't tell you how much stuff I've snagged off Comixology based on covers that pop up on the Spinner Rack Twitter feed.