Spell-lash

Spell-lash was an alteration spell that completely destroyed the body of the caster.

Effects
Upon casting this spell, the caster was engulfed in a massive explosion that radiated outward 25' (7.6 m). Their physical body was destroyed in its entirety, and anything or anyone caught in the blast received considerable damage.

While the spellcaster's physical form was completely consumed in the spell, their essence could be preserved by means of a clone or magic jar.

Usage
This spell was known to the Red Wizards of Thay and used in the rare instances when they faced the real threat of being captured or killed outright.