Flame Strike (Elemental prince)

The Flame Strike (Elemental prince) spell was introduced as part of the Baldur's Gate II: Throne of Bhaal game expansion.
This spell isn't castable by any party member in the game and is provided to the elemental "princes" Zaaman Rul and Imix only.
==Gameplay==
For a player who casts the High-level class ability spell Elemental Summoning or Greater Elemental Summoning and via a random d100 probability calls forth Zaaman Rul the 'good' aligned prince/princess of Earth, then while Zaaman is available the creature can be directed to cast the Flame Strike spell up to twice during the summoning period - Zaaman won't use it unless ordered to do so by the controlling player.
If the evil aligned Prince of Fire, Imix, is encountered in the game, the creature's assigned AI script will probably use this spell early in any battle with the party.
This spell is a near clone of the priest spell Flame Strike ability, with a few changes made to it.
The spell is instantly cast where the priest spell takes several seconds to cast.
The spell is directed at one single creature, and a fiery column of flame renders on the target, exposing them to 20d8 Fire damage.
A victim is allowed a Saving throw versus Spell, and if successful takes only half that damage.
This spell can be potentially blocked by Magic resistance, and a Spell Immunity: Evocation will negate it outright.
A Spell protections type defense such as Spell Deflection, Shield of the Archons and others will deflect it, while a Spell Turning will reflect it back upon the caster.
The Cloak of Mirroring deflects Flame Strike as well.