A miracle created by unknown reasons.
A terminal of the Grail, a soul created by the Greater Grail, and then manifested as a Servant. A temporary form. A temporary Servant. But by what cause this miracle happened?
She better represents the personality of "Irisviel von Einzbern" as a mother and wife. If one is to view her as a Divine Spirit, then she is more of an existence furnished with an Earth Mother Deity-like disposition.
By connecting the concept of love and motherhood to the Grail, pure and honest prayers may be temporarily answered, however, this is not the Grail functioning as a wish granter, it is her very existence sublimated into a Noble Phantasm.
She devotes herself to those she loves, and won't hesitate to sacrifice herself.
But would happen to her as a Grail when she comes in contact with the worthy? Would she still be the same?
There is still no answer for both of these mysteries.
Despite these though this Irisviel retains memories of a time long ago and having materialized as a Caster possesses Magecraft familiar to her as well as the light of the White Grail, but has seen those that either don't remember her or see her the same as the original and deep down she wishes to have that which possibly cannot be obtained yet would go out of her way protect those she cherishes.
//While this is based on the FGO version of Irisviel I will also be open to using Fate/Zero, Prisma, Carnival Phantasm, or even Grand Carnival (The FGO one)
