"The One Power that Rand al'Thor and these Aes Sedai of yours employ in their channeling... well, think of it like water. On your world, it is a great invisible ocean, deep and inexhaustible, flowing everywhere but for a few desert islands you call steddings. Here on Westeros, though... this world is bone dry by comparison to your own. Oh, we have a few deep wells, to be sure.... here a river, there a lake... but oft as not, what looks to be a lake is really just a puddle. That is what Rand found here, in King's Landing. There are magical places in this world, but this is not one of them. When Rand came through the gate and began to channel, he drew upon the power to be found here, and soon exhausted it. Your... lover, is it? husband? paramour?... whatever you call him, he is VERY powerful, as I knew from reading the books Sharra was so kind to bring me, so he drained that puddle very quickly, especially when he made use of his balefire. A few short moments, and he had made a desert. Once that happened, he could no longer channel."
— Tyrion Lannister, Trial of Seven
"Just as you lose your powers under a red sun, so Captain Marvel becomes weaker in your universe!"
— Wizard Shazam, Superman vs. Shazam!
"You do not belong here. Since you lose your magic in this world - unlike me who doesn't become weaker in any world, if your luck runs out, you're dead."
Drygur Moliom: Superman, you must do something— quickly!
Superman: But I can't, Drygur! Under this planet's red sun, I'm as powerless as any normal man!
Superman: But I can't, Drygur! Under this planet's red sun, I'm as powerless as any normal man!
"You yourself come from a different world, correct? You have a different kind of magic there- ki, I believe I was informed. But neither of the other reincarnates could channel ki when they came to this world, because it is a different type of magic than mana, requiring a different atmosphere and biology."
— Oludari Vritra to Arthur Leywin, The Beginning After the End
