Refinements:

ATK is increased by 16%/20%/24%/28%/32%. When current HP increases or decreases, Normal Attack DMG will be increased by 16%/20%/24%/28%/32% and Charged Attack DMG will be increased by 14%/17.5%/21%/24.5%/28% for 4s. Max 3 stacks. This effect can be triggered once every 0.3s. When the wielder has 3 stacks, ATK SPD will be increased by 8%/10%/12%/14%/16%.