Tables were turned

"Believe in yourself. You are braver than you think, more talented than you know, and capable of more than you imagine."

--

Soon those wizards including that boy were known as Cardinals and the boy was rumored as the ace of Cardinals. For years they slayed vampires and witches. Their faction grew with time and soon more and more people joined the Cardinals. Support for them increased bit by bit. 

Shortly they became a huge power and when the boy felt confident in his own and his faction's abilities, he declared a full-fledged war against night creatures. With heaven's blessing, the boy not only became knowledgeable but also turned out powerful to an extent that no one was a match for him. The war continued for six months. Both sides clashed head-on