Vesper Pincer (Earth) with limited ability enhancement.

Critical increases by 131. Increases damage inflicted during PvP.
When enchanted to +4 or more, chance of increasing P. Atk., M. Atk., and healing power, and of decreasing MP consumption for skill use for you and your party members during a Critical Attack.
Limited time item. Cannot be crystallized, and can only be enhanced with enchantment options.