Telesma

Telesma (天使の力 (テレズマ) ) is the power dwelling in the Phase known as Heaven and the source power for Angels of divine origin. The Magic Cabal Stella Matutina referred to the Power of the World as Telesma.

Etymology
Telesma is the English transliteration of the Ancient Greek word τέλεσμα (télesma, "payment"); and partly directly from Byzantine Greek τέλεσμα (télesma, "talisman, religious rite, completion"), ultimately deriving from τελέω (teléō, "to perform religious rites, to complete"), itself derived from τέλος (télos, "end, fulfillment, accomplishment, consummation, completion"). It is the origin of the word "talisman".

Principles
The potency of telesma cannot be compared to mana. The human body cannot handle a large amount of telesma due to a difference of affinity, not a matter of potency. If the human body forcefully does absorb a large amount of telesma, the person would suffer severe damage as demonstrated when Acqua of the Back drained telesma from Archangel Gabriel. This further shows that Saints, even if they have undergone modification from God's Right Seat, cannot handle Telesma. However there are some people who can control telesma, like Leivinia Birdway, or with an object like the Curtana Original. There have been some cases where a human can possess telesma such as Sasha Kreutzev as a result of the Angel Fall incident. One side-effect of high telesma exposure on the human body is that a person becomes able to detect nearby Magic, experiencing pressure and a slight trembling when they are near to active spells or spiritual items.

Unlike mana, which is not initially aligned when produced, Telesma is aligned to one of the elements. Large concentrations can have highly dangerous effects on the real world, such as causing large tidal waves. Such phenomena is related to the element to which the Telesma is aligned. Dense concentrations of Telesma, such as that which covered London following the Overloading of the Curtana Original, also carry the risk of an explosion if magic is used inside them.

Orsola Aquinas Rescue Arc
During the events surrounding Orsola Aquinas and the Book of the Law, Index identified and interfered with Angelene's use of Telesma-infused coin bags based on the legend of St. Matthew.

Toaru Majutsu no Index SS: Mark Space
During the Blue Research incident, Mark Space and Wyss Winered made use of Wind and Earth Telesma respectively.

British Royal Family Arc
The events surrounding the British Halloween, the coup d'état by Carissa and the Knights of England, were focused on the Curtana, the sword which acts as the focus for a national spell woven into the structure of the United Kingdom and grants the royal wielder the power of Archangel Michael within the UK's territory, supplying Telesma to the royal wielder and the knights.

When Carissa returned to Buckingham Palace in order to tune the unstable Curtana Original, the Anglicans made use of a flash spell relayed from the Coven Compass in conjunction with the safety devices under the palace in order to send the Curtana Original's power out of control at 2:30 AM. The resultant discharge caused a significant loss of power from the sword, which would have taken a month to recover, and affected many of the spiritual items in the London, destroying three small churches and likely rendering half of the spiritual items in the palace useless. It also blanketed the capital in densely concentrated Telesma, such that using magic risked causing an explosion which would envelop the city, forcing both sides to wait for it to disperse.

World War III Arc
With the rise of the Star of Bethlehem, Fiamma of the Right made use of Sasha and the residual Telesma left within her to summon Archangel Gabriel. Later on in the battle, Acqua of the Back utilized his connection to the archangel of water to drain half of its Telesma, at cost of his powers as a Saint and member of God's Right Seat.

During the final stages of Project Bethlehem, with Holy Right completed and materialized, the skies were filled with a massive amount of Telesma, dying the surrounding of the Star of Bethlehem in the colors of Heaven.

At the same time, golden arms rose across the surface in response to the change in the skies, expanding before bursting, causing destructive phenomena associated with the Telesma's alignment and producing giant objects from it. This dissemination of Telesma was intended to purify and transform the earth, but was impeded by the efforts of people across the world felling the arms before they could burst.

Due to the difference in progress between the conversion of the sky and the earth, a distortion was formed, similar to a tectonic plate fold, which would subsequently cause a massive flow of Telesma from the sky to the earth like a current once the change had passed a certain point. Initially passing to the Star of Bethlehem and then heading down once it had been filled to its limit, it would have affected the surface all at once rather than gradually, threatened human civilization in the process. However, the Telesma was intercepted by the white-winged Accelerator before it could impact the surface.

Following Fiamma's defeat, Archangel Gabriel gathered its scattered Telesma and reformed in a pure form. Seeking to restore its power and return to its proper place, it headed for the Arctic, with a line of Telesma forming between the two and the polar ice cap beginning to melt. Before the world was threatened by either the melting ice cap or a possible explosion of Telesma from Gabriel exceeding the capacity of its physical manifestation, Kamijou Touma managed to crash the falling Star of Bethlehem into the angel and make contact with his Imagine Breaker, sending it to back to Heaven.

Magic God Othinus Arc
During the Manhunt for Othinus and Kamijou Touma, Marian Slingeneyer made use of Dáinsleif to cut away phases and bring forth calamities formed from the respective types of power within the corresponding phases, just as angels are manifested through condensed Telesma.

Toaru Kagaku no Railgun SS2: Shopping Mall Demonstration
During the incident at the Russian Shopping Center, Caliche I. Niknosh's magic cabal made use of a large-scale spiritual item in the form of a giant wheel snake, powered by Telesma aligned to Archangel Michael.