1. Something undeniably exists.
Ok, first premise is obvious and probably won't lead to the conclusion this asshat has drawn, but let's see anyway.
2. Nothing cannot cause something.
You basically just said your god can't exist. God = something. Doesn't flow from premise 1 either.
3. Something eternally and necessarily exists.
WTF? This makes no sense - you would have to prove this premise, whatever the hell it means.
4. I am neither eternal nor necessary.
You got that right buddy, but this premise isn't helping your argument.
5. Whatever is not eternal and necessary needs a cause.
FAIL. First, you're making god an exception to your rule because, for no other reason, you want to. Also, this outstanding claim would require some outstanding evidence. Also, this premise doesn't follow.
6. Therefore, there is an eternal and necessary cause
of my noneternal and non-necessary existence.
Your conclusion doesn't follow from the premise. You might as well say 1. God exists because 2. God exists. Therefore, 3. God exists.
7. But I am a personal, moral and intelligent being.
Personal -maybe; moral -unlikely; intelligent -not quite.
8. Only an intelligent, personal and moral being can
create an intelligent, personal and moral being.
What? So God can't exist by your own flogic (fundy logic).
9. Therefore, a personal, intelligent and moral being must
exist.
Your insanity is going in circles.
10. There cannot be more than one such being
exactly the same, creating the same being.
What? Why the hell not? Do you just make up shit as you go?
11. Therefore, only one such Being (we call “God”)
exists as the CAUSE of all else that exists
In summary, God exists, God exists, therefore God exists. I'm sorry but I don't find your bat-shit insanity very convincing.
Try again failure.