Scum Sacrifice, You Will Become Stronger If You Do Good Deeds

This is a story in which the protagonist Lang Ling takes Wei Xiaobao as his idol and transforms from a naked savage into a legendary holy priest respected by all people. The greatest holy priest in the entire Demonic Star is my teacher, the most awesome dragon knight is my eldest brother, the most beautiful goddess is my wife, the most evil dark magic god is my housekeeper, and the strongest night hunter is my magic pet... And I am just a little priest who is determined to dedicate his whole life to the great priest profession. What kind of weird system actually requires me to do good deeds in order to get rebates? "Ding! Congratulations to the host for reviving the poor poisonous dragon and gaining the passive skill of being invulnerable to all poisons." "Ding! Congratulations to the host for signing the first magic pet and gaining the active skill True Eyes." "Ding! Congratulations to the breakthrough Lord Wuhan for providing medicine to the poor people. The system will convert it into gold coins and make a hundredfold profit..." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.