Looking at a little fledging from the dragon clan, the King of Zuweth was stunned to realize that his ancestor was scammed by the Dragon King.
He then wondered whether he was the one that was scammed by his grandfather.
He still remembered the day who gave him the object and warned him to use the tome only when the kingdom at extreme crisis.
According to historical records shown by his grandfather, two thousand years ago, when Lucifer wreak havoc on the planet, the Dragon King of that time, handed his ancestor the totem as a parting gift before their race went into hiding.
Upon invoking the chant, he was supposed to summon a powerful dragon elder of level-500 in exchange for half of his life force.
As per the rule, his life force was indeed cut in half i.e. his Max HP was decreased to 500 Billion. However, he didn't expect them to send a level-300 weakling with a life force that's almost one-hundredth of his own (13 Billion).