Re: Christians think that Jesus can be Immortal and Mortal at the sametime they say w
What's the outcome that you want for us debating this subject?
Why to redeem your heretical Arian soul. What else?

Just joking.
More seriously. I think you misunderstand the Nicene Creed itself and the issues that it was attempting to speak to. Thus, from my perspective (and not mine alone, btw), you've turned its intent on its head and seem to get from it the very opposite of what historically the council was trying to convey.
However, I can understand if you don't want to go into all of that here. So, let me recommend a book that I believe will help you to clear up some of the misconceptions I believe you have convinced yourself of:
Heresies and How to Avoid Them: Why It Matters What Chrisitians Believe, by Ben Quash and Michael Ward. The book contains key scriptural passages relevant to each heresy, a glossary of terms, and summaries of historical Church documents in which these heresies were defined and outlawed.
Topics
Adoptionism--did Jesus become the Son of God at his baptism?
Docetism--was Jesus really human or did he just appear to be so?
Nestorianism--was Christ one Person or a hybrid with a divine dimension and a human dimension?
Arianism--was Christ divine and eternal or was there a time when he did not exist?
Marcionism--is the God of the New Testament the same as the God of the Old?
Theopaschitism--is it possible for God to suffer in His divine nature?
Destroying the Trinity--does God have a simple or a complex nature?
Pelagianism--can people save themselves by their own efforts?
`The Free Spirit'--are there two kinds of Church membership, one for the elite and one for the rest?
Donatism--do Christian ministers need to be faultless for their ministrations to be effective?
Perhaps key to our particular disagreement at the moment are a couple of lines from the Chaledonian Definition that I'm going to highlight by simply lifting them out:
"Following the holy fathers, we . . . acknowledge one and the same Son, our Lord Jesus Christ, at once complete in the Godhead . . . of one substance [
homoousious] with the Father as regards his Godhead . . . one and the same Son and Only-begotten God the Word, Lord Jesus Christ...."
Nicea is NOT affirming belief in one God who is the Father, and a second belief in Jesus who is the Lord. It is affirming one belief in God who is Father and who is Son. And who as the Son, Chaledon goes on to clarify, is also known as the "Only-begotten God," but as Nicea affirmed we are still talking about just one God (not multiple gods), the very one you know as Father is also known as Son (and Holy Spirit, too, if you want to go that far).</p>