The seraph blades are, when deactivated, dull tubes with blunt edges. They are crafted by the Iron Sisters to be used as weapons. When the weapons are distributed to Shadowhunters, each Shadowhunter gives the individual blade a name. Any angel's name, except for Raziel, would be sufficient to be called upon. When the name is called, the blade springs to life, growing into a bright, glowing dagger.
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