This spells allows the user to do a number of effects. This spell can be used in conjunction with other spells such as Spatial Magic's Independent Cube spell or Forwarding Protection, "setting up" where the spell will contain It can also serves as a means to create magical link between two very similar objects such as the Book of Eibon and the Book of Eibon's Manuscript.
When performing linkings without the aid of a Spatial Magic user, the process is far more complicated. A large magic circle with the designated number of magic users around it. In a case when more than one Witch is performing the spell, one of the Witches acts as the main caster of the spell, with the others acting as support in order to support the main caster's magic reserves.
A requirement prior to the usage of this spells is that the caster must be incredibly knowledgeable in mathematics.
A chant is seen to sometimes be a requirement. After a user says their usual chants, they recite:
- ↑ 1.0 1.1 Soul Eater Manga: Chapter 101
- ↑ Soul Eater Manga: Chapter 15
- ↑ (Yen Press) Soul Eater Manga: Chapter 71 — Death:I want you two to use the manuscript copy to create a magic link between the inside of the book and the inside of the book where Kid's being held prisoner.
Taruho:That's, like, a really complicated Calculation Spell...
- ↑ 4.0 4.1 Soul Eater Manga: Chapter 72
- ↑ (Yen Press) Soul Eater Manga: Chapter 71 — This is the Yen Press translation. This may differ from scanlations.