Originally Posted by
Snowraven
In the book Dawn of the Aspects it is said that Galakrond was sort of turning undead after eating his own kind. Also, he had some control over the undead proto drakes he produced, but not much. Considering that the Lich King has ultimate control over the undead, he'd just have to either throw the proto drakes Galakrond makes at him or have him eat them until he turns undead and control him.
Overall, if the Lich King hid somewhere and Galakrond could not find him, he'd win by using his necromantic powers.
If the Lich King was found somewhere in the open before there were enough undead proto drakes or before Galakrond was undead fully, Galakrond would destroy him.