American comics: My luck is a little bit better!

After traveling to the Marvel world, Luo Bai found that his luck was a little bit better. He had no place to live, so Tony gave him a villa. He had no ability, but Ancient One said that he was gifted beyond Doctor Strange and could become the Sorcerer Supreme. He had no magic weapon, so he picked up an Infinity Stone while walking. Thanos came to Luo Bai to snatch the gem. In the end, he didn't get the gem, and the other gems were "given" to him. He said that magic is borrowed and must be returned? As a result, he became invincible...