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Osk's Runeblade is the tentative name of this weapon that Osk has in his collection.
A blade with rune markings along with there being a maker’s mark on the hilt.
Osk noted that this weapon is capable of accumulating electricity. He even said a piece of the blade is imbued with a powerful enchantment.
- Ainz considered this sword enchanted with runes to be the most beautiful of all the weapons Osk possessed.
- During the discussion Osk had with Ainz, he stated that a piece within the weapon is done by Stonenel, a famous artisan.