The less remaining HP the user has the more powerful the move (max power = 200).<br /><span class="strong">%HP remaining = power</span><br />1-4%HP = 200power,<br />5-10%HP = 150power,<br />11-20%HP = 100power,<br />21-35%HP = 80power<br />36-70%HP = 40power,<br />71-100%HP = 20power.