Is it possible that the shards bridge the dimensions between creation and the current universe??? I mean the mechanics of the AonDor seem like it to me.
P.S. I know there will be certain amount of similarities to all the shards but acting like they follow the exact rules of Scardiel is asinine the 2 opposite powers and a natural power doesn't work on all the worlds explain Warbreaker if you think it does...
P.S.S. how do "natural" powers come into existence is it because humans on Scardiel are part of preseveration and if thats the case why can't mistborn reverse aging?
Well, as I saw it when read one of BS posts regarding that, it seems that there is a Power, the power or energy of Creation itself (I believe this is Adonalsium). This Power of Creation resides in the Shards. And the magic systems are just different methods to channel or focus that power to create the "magic effects". That is the similarity I see in the different worlds and magic systems.
Of course, every world would have different numbers, styles and philophies of magic systems. I believe the three worlds we've seen so far (I'm counting only the "public" ones) are very different to each other, but all have these characteristics: there are Humans in it (although it seems that every species is very different from each other); there is "magic" available to some (some being a number largely over the typical fantasy worlds); and these "magic" comes from one of the Shards. Also, we could see the "focus" and "fuel" as a similarity in each world, but this is something less factual (although "factual" is too strong a word for the theorizing we're up in here....).
I don't think that there are "natural" powers in Scradial or any other of the worlds. I can't find the quote right now, but it is the HoA thread, BS said something like "each magic system is there because every race and people have a different genetic pool".
That is, that in every world there are individuals who can bear different magics, depending on the Shard that created sentient life in that world and the specifics of the individual races in each world. That explains why only Arelenes can have Elantrian magic (as explained, there were people who could use the Dor before Elantris, and those people build Elantris as a giant amplifier), only Terrispeople are Feruchemists and so on.
It seems in Warbreaker everybody has Breath and can use it, but that is much to say right now.