The Sister Spirits of Aura

When this card comes into play, play the first
Sister of Aura. Whenever a Sister of Aura is
destroyed or permanently exiled, remove it from
play and play the next Sister of Aura. After the
third Sister of Aura is removed from play, play
the first Sister of Aura.
The three sister spirits are the founders of aura. They
are the reason everything is the way it is and govern
the laws of aura and reality. There used to be only
two, until She somehow ascended to be one.