(Exhausting) Mask-Sealing Allion

Lore
Each battle saw another devious monster and another useful skill added to the mask, and its burden increased in kind. When I reached 99, I could no longer ignore the strength of its hold on me.

Acquisition
Evolve Mask-Sealing Allion with Allion's Diary Page three times.

Name origin
?

Additional Info
Boosts the number of Event Items acquired up to 1.7x regardless of Skill Level.