Explanation of Curtana Original

Curtana is the United Kingdom's greatest spiritual item. It empowers the wielder, a member of the British Royal Family, with the power of Archangel Michael if they are located in the country. The All Dimensions Severing Spell, which is exclusive to Curtana, creates dimensional debris due to the cutting of dimensions. The dimensional debris is created by severing every dimension at the coordinates whether they are higher or lower dimensions. These cross section objects that are created appear as large white masses despite the fact that it severs all dimensions because humans can only perceive those that appear in a 3-D world.

If what she was saying was true, that sword was a monstrous weapon that could cut right through dimensions which did exist but were more of a concept than anything. No matter how much steel someone used to protect his body, Curtana Original could cut right through the dimension to cleave him in two. Even so, Kamijou did not feel any fear. The scale was simply too great. Apparently the universe was constantly expanding due to the big bang, but no one could concretely feel the universe expanding with their five senses. Second Princess Carissa was using a power on that level. “All Dimensions Severing Spell.”
(Toaru Majutsu no Index Volume 18, page 64)

Carissa held up her sword that could slice through not just a manmade nuclear shelter but the earth and the universe itself.
(Toaru Majutsu no Index Volume 18, page 64)

The scope of the All Dimensions Severing Spell reaching to cut the higher and lower dimensions is compared to the expansion of the universe. The power from Archangel Michael that fuels Curtana and allows this spell to be activated is inferior to the power The Holy Right produces within Fiamma of the Right.