I really like what you're going for here. I think the range of universe alteration is a bit off in the sense that there's a 1-in-36 chance absolutely nothing happens when the player carefully arranges their ultimate damage combo, but a 2-in-36 chance two effects go off simultaneously (I really, really like including "Deja Vu" twice from a comedy perspective, though).
Honestly, the only effect I don't like in here has to be Nothing. I think that if you're gearing up for a spirit H-bomb to the point that you have to roll on a table for an ultra kill effect, it feels wrong that there's a possibility that "reality just rejects that" and nothing happens.
My favourite effect in here has to be either Fatality or Boiling War. I like any reason for the player to get extra WAR DICE, and I love the image of the world superpowers getting enraged by each other clearly overstepping, because nothing else on Earth is powerful enough to register on the doomsday tracking system.