Retribution of Abraxas

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Retribution of Abraxas is a Post-Moon Lord weapon that can be made from 50 obsidian, 50 Crystal Shard, 25 Nightmare Bar, and 12 Tooth of Abraxas at an Ancient Manipulator. However, it is weaker than some Moon Lord drops. It emits little purple particles around the sword when swung and those particles emit light making this sword quite useful as a light source.

Trivia
Abraxas is a word of mystic meaning in the system of Gnostic Basilides, being there applied to the "Great Archon".