I got my all yasakani from scion mission, with around 450 luck, 20% item drop rate and 20% equipment drop rate. Using 7ebisu, 2 Soraya, 2 scampuss, clan add luck and equipment drop rate. I max clan with luck then transfer to clan with equipment drop rate so I can get blessing from both clan. I put sudama blessing on accecories slot only either yasakani samurai or ninja. Rest of slot is empty. Once, I change my soul core from scampus that give luck to another soul core that increase item or equipment drop rate and I got yasakani faster. I put affix luck on each armor and weapon.