This further explains why Vin required more than normal power to push/pull the metalminds from the Lord Ruler, because of their proximity to his soul, via the Spiritual Realm.
3.) The amount of investiture is relatively low on Scadrial, whereas worlds like Sel and Roshar are pushing around “high power” according to Brandon. I interpreted this to mean that hemalurgic spikes and metalminds have low amounts of investiture compared to Shardplate and Shardblades.
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