Fire shroud

Fire shroud was originally named flame shroud and was also published under the name shroud of flame. It was an evocation spell that caused one creature to be engulfed in flames and endangered those around it. Post-Spellplague, this spell attacked all enemies close to the caster, but with less intensity. Colloquially, it was called the "trollkiller" spell.

Effects
The earliest versions of this spell could target a single creature up to 10 yd (9.1 m) away. A later version increased this range relative to the level of the caster. The post-Spellplague version only had a radius of 15 ft (4.6 m), but attacked all enemies (and only enemies) within that area.

Unless the target managed to resist the casting of this spell, it immediately started to burn. All flammable items worn or carried by the target also caught fire, although magical items had their own chance to resist the fire. Volatile oils were easily ignited by the flames and added their damage to the conflagration. In the pre-Spellplague versions, the immolation was so intense that flares were thrown off the target creature and could possibly burn or ignite other creatures or objects within 10 ft (3.1 m). All versions of this spell continued to burn their target(s) until the duration of the spell expired, or until a target doused the flames, or until it was dispelled, whichever occurred first.

Components
The pre-Spellplague versions required verbal and somatic components as well as a pinch of saltpeter, a small bit of phosphorous, and a sample of lace or spiderweb. The post-Spellplague version required only a slight gesture to cast.

History
This spell came to the attention of a mage, Ulthorn, in Waterdeep when a caravan master from the East named Muirhar brought him the Spellbook of Daimos which contained flame shroud and other spells. This mysterious tome was found on the body of a gnoll after the caravan survived an attack in Bleached Bones Pass. Ulthorn kept it secret for many years, revealing it only to his apprentice Rendergallis, and the book disappeared after Ulthorn's death. Flame shroud was slowly passed around to various wizards over the years, and some 300 years later it was published as shroud of flame in "Volo's Guide to All Things Magical" shortly after the Time of Troubles. This spell was also known to be in Daltim's Tome of Fire.