Patent Kiri no Tsuyu [2], кинжал (Renewal)

One of the knife used by ninjas who are good at dual sword.
From the sharp edge of the knife, he started to show his natural power.
It seems to resonate with the boots of the great hero.

When equipped with Sharp Wind Sword,
ATK + 15 when sum of refine rates is higher than 3.
ATK + 3% when sum of refine rates is higher than 5.
When sum of refine rates is higher than 14, increase damage of increase damage of Cross Strike by 30%, reduce its cool time by 2 sec.
When sum of refine rates is higher than 16, player can cast Kagehumi as much as distorted Zangetsu skill level, can cast Zangatsu as much as distorted Kagehumi skill level.
When sum of refine rates is higher than 18, increase physical damage to all property enemies by 15%.
When sum of refine rates is higher than 20, increase damage of Cross Strike by 25%.
When equipped with Great Hero's Boots and Sharp Wind Sword, DEX + 10, ATK + 7%.