Templum Incendere is a fire-based spell used to set fire to a person's sanctuary, whatever their target places the most faith in. This spell does not affect the person personally. The spell also makes the temperature spike and feel like a sauna as the heat keeps building and things begin to set on fire.
The Demigod Diaries[]
The Son of Magic[]
Lamia cast this spell to kill Burly Black in front of Dr. Howard Claymore. She also used this spell to try to destroy Alabaster's spellbook.