|Titles||The Fossilized King|
|Home||Blistering Labyrinth, Plane of Earth|
|Areas of Concern|| Buried secrets|
|Domains||Destruction, Earth, Evil, Strength|
|Subdomains||Caves, Fear, Ferocity, Metal|
|Symbol||Fossilized dinosaur tooth|
|Sacred Colors||Brown, gray|
|Images of Ayrzul|
Source: Planes of Power, pg(s). 6
Ayrzul has existed since the earliest days of the Elemental Planes, during which he shared control of the Plane of Earth with his rival Sairazul, one of four good elemental lords. Initially, the good elemental lords had the upper hand, while their evil rivals were disorganised. However, as life evolved on the Material Plane and started using the elements for evil purposes, the situation reversed. While the good elemental lords started bickering, Ayrzul and fellow evil elemental lords Ymeri and Hshurha were gathered under one banner by Kelizandri, and together they defeated their good rivals one by one and sealed them away.
Shortly after he defeated Sairazul, Ayrzul encountered the xiomorns, who were originally created by his rival but had forgotten about her. He craved the mythic essence that Sairazul imbued into the xiomorns, and showed them a vision of their race going extinct during a mental invasion of the yithians. He then asked them to sacrifice a quarter of their number so he could have the power to teach the rest how to forestall their demise. The xiomorns, appalled by this suggestion, nonetheless believed Ayrzul and decided to sacrifice the mythic essence of half their number instead, granting Ayrzul the same influx of primordial power. In exchange for their essence, Ayrzul gave the xiomorns knowledge of the Vault Seeds.
Ayrzul shows little interest in the politics of the Plane of Earth; he is seemingly content with maintaining the status quo. Instead, he concentrates his efforts against the Plane of Fire and his hated rival, Ymeri, the Queen of the Inferno.
Ayrzul considers the xiomorns to be his favoured children, and they in turn see him as their patron, if not their god.
- James Jacobs et al. (2011). The Inner Sea World Guide, p. 233. Paizo Publishing, LLC. ISBN 978-1-60125-269-2
- Todd Stewart. (2009). The Great Beyond: A Guide to the Multiverse, p. 18. Paizo Publishing, LLC. ISBN 978-1-60125-167-1
- John Compton, Paris Crenshaw, Eleanor Ferron, Thurston Hillman, and Jessica Price. (2016). Planes of Power, p. 5–6. Paizo Inc. ISBN 978-1-60125-883-0
- Greg A. Vaughan. (2017). Ecology of the Vault Builders. Vault of the Onyx Citadel, p. 71. Paizo Inc. ISBN 978-1-60125-952-3
- James Jacobs. (2014). The Emerald Root. The Emerald Spire Superdungeon, p. 149. Paizo Inc. ISBN 978-1-60125-655-3