Rune King Thor vs. Darkseid w/Twist
Ok the fight is Rune King Thor versus Darkseid, however for the purpose of this fight RKT is considered essential to the multiverse and therefore not eraseable by the Omega effect.
Darkseid however can use his eye beams, just the disintigration effect will not work. The fight is in a neutral area, and whoever destroys each other's body first wins (since Darkseid can regenerate after death since he is essential, but if he dies once for the purpose of this battle he would lose).
So who would win, under these circumstances?
By the way I know that this fight was probably done already, but I wanted to see what would happen with specific rules to guide it to counter the instant disintigration from Darkseid.