6dc5455c____The_Coppermind___17th_Shard__Entry
[Chapter] 38 [Entry] 
Hemalurgy can be used to steal Allomantic or Feruchemical powers and give them to another person. However, a Hemalurgic spike can also be created by killing a normal person, one who is neither an Allomancer nor a Feruchemist. In that case, the spike instead steals the very power of Preservation existing within the soul of the people. (The power that, in fact, gives all people sentience.) A Hemalurgic spike can extract this power, then transfer it to another, granting them residual abilities similar to those of Allomancy. After all, Preservation's body—a tiny trace of which is carried by every human being—is the very same essence that fuels Allomancy. And so, a kandra granted the Blessing of Potency is actually acquiring a bit of innate strength similar to that of burning pewter. The Blessing of Presence grants mental capacity in a similar way, while the Blessing of Awareness is the ability to sense with greater acuity and the rarely used Blessing of Stability grants emotional fortitude.
The Hero of Ages/Epigraphs - The Coppermind - 17th Shard
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