Disaster / Destruction
The Dwarf-God of Kravennia self-refutates himself, creating the Kravennian Canyon in the process.
The process of Self-Refutation is not a suicide, but it's close to one, even if it's difficult to define and highly debated on how it works by philosophers, scientists and religious-figures. What is consensus is that it was akin to a very powerful explosion, that the deity was gone from this realm, and that it caused significant seismic and volcanic activity in the nearby sea-islands and in the south of Glassland.