The Bigger the Side Effects, the Better I Am, Bro, Here I Come.

Lin Yun entered the world of cultivating immortals as a small casual cultivator in the Yan Kingdom. He had low-grade water spiritual roots. He originally thought he could embark on the path to immortality. However, he practiced diligently for decades and was unable to build the foundation until he became old and decrepit. Seeing that his dream of cultivating an immortal was shattered, he had no choice but to take advantage of the few years he had left to marry a woman and enjoy the rest of his life. He never thought that he would be kidnapped by the stunning witch of the Spirit Demon Valley and used as a furnace. He was also asked to practice the life-destroying magic skill. Lin Yun was stunned. Fortunately, the negative reversal system is awakened. It can turn negatives into positives and reverse the side effects of any exercises, spells, or elixirs. Lingyuan Jue: Advanced technique to quickly improve your cultivation level. Side effects: If you practice once, your life span will be shortened by ten days. Negative reversal: Practice once and your life will be extended by ten days! Demonic Dao Foundation Building Pill: Contains 200% poison and can only condense the lowest grade Dao Foundation. Negative reversal: It does not contain poison and can only condense the top immortal Taoist foundation! Ancestor of the Spirit Demon: "Lin Yun, the Nether Demon Skill has extremely side effects. You have to suffer the pain of soul-eating every day, and the more you practice it, the harder it becomes... What? You have no pain in practicing it, and the more you practice it, the smoother it becomes?! This is unreasonable! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.