Ono no Michikaze Hanafuda Card

Origin
Famed for his calligraphy, Ono no Michikaze turned a Chinese art into a Japanese staple. His magnificent script was gentler than the rigid Chinese methodology, serving as the basis for future poets.

One legend asserts Michikaze took a walk one rainy night to vent frustration over his efforts. He observed a frog constantly failing to jump the gap to a branch, thinking it was an idiot. At that very moment, the winds shifted and the frog finally landed on the branch. Michikaze realized he was the stupid one for not constantly trying, and devoted himself to perfecting his craft.

Effects
Holding while moving through rain increases diligence to higher levels. The user becomes unfazed by repetition and failure, constantly working towards their goal. Even when tired, the work doesn't cease. Which is probably best advised against, as the user's head fills with a literal fog that clouds their judgement and makes thinking clearly a challenge.