Motivations For Destruction

My name is Railey Sullivan and I was supposed to be the hero who saves the world along with my party, but my achievements were stolen and given to my brother. Without understanding what was happening around me, I complained about the injustice committed only to realize that I was used since I was born to be the ultimate weapon who would make the wrong person ascend to the throne. The saint accused me of rape and murder. Her comrades testified against me, the nobles branded me a fraudulent, a liar and of using taboo magic to achieve my goals. To hide this alleged atrocity the king sentenced me to life imprisonment but nothing further than that ... I was handed over as a guinea pig for the church experiments. After 4 years of torture and disturbing experiences on my body I was released by a sorceress who taught me to survive and control my magical essence and blind anger to see how karma would destroy those who betrayed me in a heinous and bloody way. 50 years later, I became the most feared mercenary, since then the information I have collected has led me to come across a macabre truth and when trying to send the message I ended up dead but damn my luck ... I had to wake up with 5 year old?