[Paraphrased]In order to use magic from one world on another world, do they need a bit of [the first world’s] Shard with you?
It helps a lot. But there are other ways to do it. What’s going on in the Cosmere is people have 3 sets of DNA. They have Physical DNA, Spiritual DNA, and Cognitive DNA. Their Spiritual DNA is what encodes the magic system into them, their Investiture. So if you can find a way to rewrite your Spiritual DNA, you can do all kinds of funky things. That’s what Hemalurgy does. It rips off a piece of someone else’s soul, staples it to yours. So if you went with a Hemalurgic spike to the right place, ripped off a piece of someone’s soul and stapled it to yourself, you could create short circuits that will let you do all kinds of goofy stuff.
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