Death

Azrael (the angel of death) is also portrayed as the wisest or cleverest of the archangels. One story in the Qur'an has that God asked the four archangels (Michael, Gabriel, Uriel, and Azrael) to gather seven handfuls of dirt from the base of the Tree of Life in the Garden of Eden. They realized that only three of them would be able to present the Lord with two handfuls, while the last would only bring one handful. Michael and Uriel immediately began to argue over which of them would carry two handfuls and which would carry only one. Gabriel tried to step in as a mediator, but eventually fell in with the argument. meanwhile, while they were distracted, Azrael sneaked away and gathered all seven handfuls of dirt by himself, putting them in a bag and taking them to God alone. (from wikipedia) Death is the fate of us all, and so she holds the wheel of fortune as her dream catcher. A cycle of rebirth is always at work. She is the death head but also holds the nourishment for the next generation. Without death there would never be regeneration, evolution, or revolution of the wheel.