Board Thread:Off Topic/@comment-25396609-20190908002326/@comment-27745396-20191025163627

I mean with certain limits it could work. It just needs to be balanced properly and have some in world explanations why the character doesn't win all fights in matter of seconds by summoning a mecha robot or something.

Like Yang's semblance allows her to win almost any fight with one hit (if she doesn't miss) but because she needs to take damage to charge it, she can do it pretty much only once per fight. Or how Weiss has pretty much the most OP semblance in the show but it's balanced by the facts that she is one of the more physically weaker fighters and pretty much a sitting duck while doing summoning and in lesser extend during forming her glyphs.

So for example you could give this "green lantern" semlance limitation like allowing the user only use it 1-3 times per fight. The other reasonable limitation could be that the more complex the imagined object is, the more time making it will take (think Momo from Bnha) leading the character mostly use simple shapes like staffs and wall like shield during normal fights.

Or you could turn the character themself their worst limitation. Maybe they are bad at multitasking, making it hard to focus at creating objects while fighting. Or perhaps they have little to no imagination leading them to use the same few object time and time again.