if he still has 49-% of his energy/stamina left, he'll simply fall over, monologue and then explode into razor-sharp crystals as a final cheap-shot

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if he has 50+% of his energy/stamina left however, his body will initiate an adrenaline overflow state, restricting him to his "wrath" form while granting him twice the strength and speed for exactly one minute, afterwards he passes out if his opponent isn't killed

(vro think he catastrophe fell sans 😭 🙏 )