Historical Data
An angel is a supernatural being found in many religions. In Christianity, Judaism and Islam, they typically act as messengers from God. In the Hebrew Bible, angels often appear to people in the shape of humans of extraordinary beauty, and often are not immediately recognized as angels. Some fly through the air, some become invisible, sacrifices touched by some are consumed by fire, and some may disappear in sacrificial fire. They are described as pure and bright as Heaven; consequently, they are said to be formed of fire, and encompassed by light. Some verses in the Apocrypha/Deuterocanon depict angels wearing blue or red robes but no such reference occurs in the Protestant books. They are commonly depicted with an accompanying aura or nimbus of light called a halo. Though superhuman, angels can assume human form.
 Amtgard Description
In times of great need, a healer of good or neutral disposition may call upon the servants of their deities. If the right rituals are made, and the gods in favor of the mortal, Angels will come to the service of their Summoner. Once conjured these beings will fight for the Powers of Light, and protect their wards until such a time that they must return home. To effectively conjure an Angel, a Healer of the listed level must sacrifice the number of magic points next to the angel entry, from every ten points available, just as if buying a weapon. The term “Angelical” is applied to conjured angels like Guardians, while “Celestial” is the appropriate term for free-roaming agents of Good such as the Elohites and Seraphim (although their are certainly Avengers, Messengers and the like who exist without a summoner to call them forth, servants of a higher power).