Bittering Soulclash

Send forth a massive wave of dark mist using caged souls, reacting with the heat signatures of any foe standing before thine self. Once the targets have been afflicted with this bitter mist, their soul slowly whisked away to be caged, have ice spikes burst through their bodies and turn into frozen husks. A purgatory of sorts, the foolish combatants surely perish leaving behind only their cold-shocked corpses. Be wary, caster, as the spell requires attentiveness absolute! Death before completion of the spell causes it to backfire into thine allies, or fire off into any living being. Caution is advised, as this spell could cause the mass destruction of everything around should it fall into the wrong hands. The spell has no true master, as it only carves itself into the mind of any forsaken being capable of staying sane after witnessing all opposition die a horrible death.

"May you trap souls for eternal damnation, for only those with resolve shall chant my woes."