|Titles||The World Thunder|
|Home||Mhar Massif, Varisia|
|Areas of Concern|| Caverns|
|Domains||Chaos, Destruction, Earth, Fire|
|Subdomains||Ash, Catastrophe, Caves, Smoke|
|Favored Weapon||Heavy pick|
|Symbol||Shattered triangular rune|
|Sacred Colors||Black, orange|
Source: Spires of Xin-Shalast, pg(s). 52
Mhar is one of the Great Old Ones who tried to birth itself into Golarion eons ago. Its birth failed, and the alien creature was stillborn, slumbering for uncounted ages. Its resting place is the Mhar Massif in the Kodar Mountains, which is also the site of Xin-Shalast, capital of the ancient Thassilonian nation of Shalast and former resting place of the runelord Karzoug. Mhar's holy symbol is a shattered triangular rune.
Worshipers congregate near volcanic areas and seismically active rifts, aiming to spark geological events. Through magic and living sacrifice they hope to force open the correct vent and awaken Mhar. Although agents of elemental destruction, the faithful are in fierce competition with the followers of Rovagug, whom they see as brutish and myopic.
In 4708 AR, under orders from an unknown patron from Kadath, several denizens of Leng sojourned to the Material Plane in an attempt to awaken Mhar using a time-distorting artifact called the Leng Device. Their plans were thwarted by the same group of adventurers that killed Karzoug. Had Mhar been awakened, it would have spelled doom for Golarion.
- Original Source: Greg A. Vaughan, Spires of Xin-Shalast, 2008; James Jacobs. (2016). The Elder Mythos. In Search of Sanity, p. 73. Paizo Inc. ISBN 978-1-60125-882-3
- James Jacobs. (October 27, 2010). Old Ones Cult, Paizo Messageboards.
- Greg A. Vaughan. (2008). Spires of Xin-Shalast. Spires of Xin-Shalast, p. 52. Paizo Publishing, LLC. ISBN 978-1-60125-041-4
- James Jacobs. (2011). Cults of the Dark Tapestry. Wake of the Watcher, p. 65. Paizo Publishing, LLC. ISBN 978-1-60125-311-8
- Colin McComb. (2011). Faiths of Corruption, p. 20. Paizo Publishing, LLC. ISBN 978-1-60125-375-0
- Greg A. Vaughan. (2008). Spires of Xin-Shalast. Spires of Xin-Shalast, p. 61. Paizo Publishing, LLC. ISBN 978-1-60125-041-4