Born In Blood And Iron: Beast Mage Chronicles

Deus was thrown to a mountain range filled with ranked and unranked magical beast. Surviving a deathtrap, he created the True Beast Scripture. It mentality was to conquer the beast within, tame the beast within, nourish the beast within. Through it, the person could harness the beast mana and powerful blood essence without backlash. It was complete control. From this point on, he rose more prominently and began his true path to supremacy.