Thor, Vol. 2 #72 (2003)

The Reigning, Part 4: "Paradise Lost"
The Reigning Part 4. Meet Magni, Son of Thunder! He's All-Father Thor's boisterous offspring, a hard-drinking, hard-fighting, hard-loving rascal! If only he's stop associating with those mortals - they're bound to be a bad influence on him!
Release Date: 2003