It should be just that easy. He should only have to envision the key while holding the sack, command it to seek it out, and the sack would open a doorway—a threshold between the here and the there—and the key would be waiting for him to reach in and take. For it was Loki’s sack, after all, a trickster’s sack, a sack created for the sole purpose of stealing. The very one Loki used to snatch what he pleased from the other gods. It was certainly never meant to be something as trivial as a gifting sack, to deliver toys to good little boys and girls. Only Santa Claus could have so twisted its
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