Just as the title says, I cursed him and now I'm partially responsible for his death because I heavily wished it on him. This was before the liturgical terms updates and my understanding of living according to Maat. I had so much hate in my heart and I let it out on him as target practice. I don't know what to do to make amends before my soul is judged on Maat's scales for this. In my heart it was done so on my misconception of his "race" and envy of his wealth that I felt he didn't deserve so I'm sitting here feeling I messed up after reading the Death & Slaying Ethics page.
This was an extremely irresponsible act and total abuse of spiritual powers. If I understand correctly:
1. You had hate that you let out on this person "as target practice", as in, random? What this says is that there was no real conflict or even connection between you and him.
2.
This was before the liturgical terms updates and my understanding of living according to Maat.
You needed to learn life and death ethics in order to understand that it is wrong to attempt to slay someone with magic, on completely unjustified reasons? Secondly to this, it seems that what you care more about is saving your backside from Gods judgement. Based on the Ethics of Ma'at this incurs the heaviest weight as it represents murder from hate and envy.
This person could have been someone's father, husband, son, brother etc. Since we are all people living together in this world, it does not matter whether it is your father/husband/son/brother or someone else's, but many people have the mindset that "nothing bad will happen to me and my family".
If you felt his wealth was undeserved, as in, acquired illegally, what you should have done is a working to inflict justice on him. If his wealth was legal then there was no justice to instill.
I am not the one to judge but the only thing I can recommend based on the severity of the above is that you need to reach out to the Gods directly and receive understanding about the above, and if there is anything you can do to amend based on what They instruct.
As a general advice for everyone, if you have hate on someone big enough as to motivate you to curse them, there are two things you must do in order to not ruin your karma and future:
1. Don't cause harm, cause
justice. If you are attempting to curse a person that has caused you no injustice, but you know they are doing something immoral or illegal (stealing bullying, scamming others etc), instill justice on them, not harm. Justice is going to manifest into ways that are right for the said person to pay for their misbehavior.
2. If a person has caused you harm, cause them proportional harm or strong enough that it will discourage and disarm them from causing you any extra harm, in a responsible and humane manner.
If there are extreme cases of rapists, murderers, paedophiles etc. that you have developed hate for and willing to curse, the best thing to do is to decide based on the Death and Slay Ethics linked above.
When it comes to cursing others you need to treat spiritual abilities as guns and other weapons. They can cause fatal harm but they can also get you into serious trouble. The laws of Ma'at have
always been enforced on our souls across humanity's existence, is just that only now people have gotten to read about and discover these laws.