We could always look at the other side of the swap. I'm pretty sure a Spark would qualify as a Caster for the Holy Grail War, and Gil's savvy enough with those electroswords to make Saber...
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Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.
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Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.