Detonate
From HGWiki
Caster Level(s): Wizard / Sorcerer 9
Innate Level: 9
School: Evocation
Descriptor(s): Fire
Component(s): Verbal, Somatic
Range: Touch / Gargantuan
Area of Effect / Target: Single
Duration: Instant
Additional Counter Spells:
Save: Special
Spell Resistance: Yes
Description: This spell causes the target to explode in a gout of flame. On successful touch attack, this spell causes it's target to make a Fortitude save or explode. If the target saves it still takes CLd10 Fire damage boosted by Lore. An exploding victim will do CLd8 in a Gargantuan are with Reflex save for half.
Notes
Targets which are immune to Disintegrate are also immune to Detonate unless this immunity is purely due to spell level.
Despite being Fire based it is possible to cast this spell underwater.
An Accursed Pariah may never learn this spell.