This fight take place in the deep recesses of Space where there are no other living beings for billions of light-years away where Rune King Thor has become under the control of the MIGHTY CYTTORAK. There for Thor has now become not only a magical threat to earth but to the entire universe. Dr.Strange an the Ancient One have been able to use the power of the Vashantii to nullify RKTs' omniscience, teleportation, time an space control an god blast, but at the cost of nullifying their own time/space, teleportation, an any one hit kill spells. They will now fight to save the Marvel Universe but WHO WILL WIN.
So Thor has no omniscience, teleportation, time an space control or god blast. An that goes for both Dr.Starnge an Ancient One.
Everyone Is at Full power an is able to use any other ability other than the ones that are nullify.