Divine Necromancer: I Can Design My Own Summons

In a world where the humans lived with four other intelligent races, Dragons, Phoenix, Demons and Elves conflict was everywhere. The rule of jungle applies to the world where the strong preyed on the weak. The Divinities were the highest respected members of the society. Divinities were beings who had the ability to utilize mana in the atmosphere to cast Magic that has enough power to change the landscape of the world.
Lucius, the protagonist, faced the Divinity exams at the age of 16, a mandatory exam that he must take since he had turned 16. Despite expecting failure, an unexpected event unfolded, the world system chose him, changing his life forever.