Gyomei Himejima leaps and swings his spiked flail to strike the ground, dealing $180\%$ ATK DMG to all enemies with a $40\%$ base chance to apply [Knockdown].After each cast, Gyomei Himejima gains $1$ stack of [Crumbling] mark.Each [Crumbling] mark increases Gyomei Himejima's ATK by $20\%$ before casting.At $3$ stacks of [Crumbling], deals $1$ additional hit of $90\%$ ATK DMG to all enemies, applies [Imbalance] to them, and removes all [Crumbling] marks from himself.Under [Rock Mark] state, this skill's Crit Rate increases by $20\%$.Under [Ground Rage] state, this skill's DMG penetrates enemy shields.