Erase? Do You Think I'm an Eraser?

Traveling through the world of cultivation, Song Peng gained the ability to erase everything. But every time you use it, it burns life. In order to survive, I pretended to be a mortal and lived in a corner. Until the Immortal Sect was encircled and suppressed, and the crisis of world annihilation came, an old devil covered in blood hugged my leg: "Senior! Stop playing games! Please take action and wipe out these sanctimonious hypocrites!" I looked at my remaining three years and fell into deep thought. ——Why should I lose my life if you fight?