Ancient Defender's Trial

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As excited as Bastion was, Kieran's last comment drew his attention to the final item. Initially, Bastion dismissed this item as a material. And, because material manipulation was limited to production Professions, Bastion thought it was useless.

However, he was mistaken.

The item inside the chest wasn't a material despite its looks, which resembled a cross between a metallic ore and an anachronistic igneous rock. 

「 Rune Stone - Fortitude Enchantment (Special Consumable)

Item Rank: Epic

Item Level: N/A

Item Usage: Once activated, this rune can improve the effect of skills up to S Rank Skills. The improvement varies on the user's latent «Soul Permanence». [Maximum Increase: Skill Rank +1.] 

Description: A naturally formed rune stone imbued with mystical properties. Although its origins appear ancient, the energy contained inside is undiminished by the passage of time. 」