Part of the Time of Need cycle in set. I almost set this aside from the cylce, since it doesn't specifically 'like' Legends... but four obvious cards that like Legends, and one that's friendly toward them is fine.

It's a bit wordy, but I can't bring myself to chop phrase one or three. Can't chop phrase one, because that's what makes this card different... plus I like how being an aura allows me to add abilities to a clone card without needing to spell it out. I don't/don't want to get rid of clause three because this would be a killer of a removal spell if I did. If Hero's Demise was an acceptable rare, how good would a card be that got to two-for-one two of your opponent's creatures if he controlled a Legend... and it cost ? Silly.

I suppose I could just Sakashima the Impostor here. But... I don't know... for some reason I don't wanna. Maybe I should, anyway.

You could combine the first couple of clauses? "Enchanted creature is a copy of that creature, with flying"

According to Alex, you should even be able to say "A non-legendary copy" and avoid the legend rule making them all go blam. Though you don't get quite the same effect when a legit second real one arrives; if that mattered.

Um, that's not quite what I said... I said that if two creatures have the same name but only one is legendary, they don't both go pop. I'm not sure that "is a nonlegendary copy" would work templating-wise.

You could say, "Enchanted creature is a copy of the chosen creature, except it has flying and isn't legendary."

Well, "and it isn't legendary" is probably a bad idea. It expects players to know the correct rule, and, most do not. At the very least, I'd be forced to write a weird reminder text, which defeats the point.

I really liked the idea of how flying got it's own line independent of the cloning... but I suppose when a mechanic and an idea butt heads, the mechanic wins. Changed it to "Except it gains flying and it's name becomes 'Ibok's Veil'" to solve both problems. I don't like the name, but the idea of the enchantment changing the name of the creature does a good job of solving the problem. Any suggestion on what the creature's name would become?

Changing the name is probably the simplest approach, yes. It does mean two of these on legends will annihilate both enchanted creatures, but that seems a pretty corner case.