I didn't mean taking it away, but that's also good to know. I meant, like - say these markers were placed by a spell. Or say someone does magic that makes the river here turn pink. Is there a kind of spell that reverts things back to how they're supposed to be? Magic that erases magical effects?

[Though, good to know about the rest of that too, honestly. Even if he's terrible at wording what he means out of sheer ignorance to how magic works, he's learning useful stuff here.]