Bending gravity works in a vacuum, that's why. In addition, it alters spacetime, resulting in a relative time based on the amount of force gravity exerts on mass. Wings can be cut off, whereas the Storm Sorceror's ability to affect winds is not, as far as I know, something that can be cut out with a sword. As far as I'm concerned, by implementing reskinning as a mechanic, you lose access to having mechanics that accurately model physics, anatomy and in some cases even the magic of the settings that people are playing in.
It seems like you're over thinking this stuff. The game is supposed to be fun. If a spell caster wants to cast fly, and describes it as wings spurting out his back, then what's the harm? Of course, doing so, if it is cool for the story, the BBEG may attempt a swipe at his wings and try to slice em off. Ok, so now the caster takes damage and has to make a Con check to maintain the spell. He fails. DM describes the wing got sliced off, rather than just cut/knicked. I mean, last time I checked, a fighter getting hacked at doesn't generally lose limbs, they loose HP. Certain game/story moving situations might call for otherwise, but it's not often in my experience that player characters deal with lost limbs or broken bones. And are you really talking about physics in a game where wizards can literally cast a Wish spell?
And here I thought we were talking about reskinning things by deliberately ignoring potential differences between them to suit our purposes, and what actually gets sacrificed as a direct result of that. Whatever, you want to me shut up, I'll shut up.
Um, yea, I will reskin things but that doesn't mean I ignore the differences. I embrace them. Because not every spell, spellcaster, fighting style, ability, ect needs to be Vanilla. Some like chocolate, some like mint, but it's all good because it's still ice cream. For me, the rules are secondary to moving forward a fun, engaging, and compelling story. The rules are a tool to utilize to ensure people have fun and that one person does not become more powerful than any other. The rules should not create such limits that makes it more of a chore and grind than a fun time and chance to tell epic stories.
And no, I don't want you to shut up. This is a forum where people can be heard. But this thread was started for a purpose to help out a fellow player that wanted to find a neat way to do something fun and unique. And instead, it has been highjacked and thrown way off topic because rather than help her find a way to do something, some people just try to shut her down and find reason why, in a game about dragons and zombies and heroes doing miraculous things, she can't do that thing that would allow her to tell a very special and FUN story. And the thing that she's asking for is not to turn into a giant and throw boulders or spew lava from her nose. In a game where Golems are a thing and wizards can shoot lightning from their fingers, she wants to be able to throw a shield as a weapon. How, in the context of this game, is this so drastic that it can't POSSIBLY happen? A monk's fists can become magic, a high elf can spray acid or throw fire or ice at will from out of nothingness with a cantrip, but god forbid a player throw a shield as a viable weapon option. I apologize [MENTION=8713]Afrodyte[/MENTION] for taking attention away from your original purpose in starting this thread. But hopefully, you've still managed to find something of value here.