Azure Lotus Frozen Inferno

Azure Lotus Frozen Inferno (蒼蓮凍炎, Sōren Kōen) is considered to be a long-lost spell, created by the Joyan Monks in ages past. It's considered to be a sacred technique, as it has the ability to completely seal anything it touches in the densest of permafrost; this made it into a deterrent technique of sorts — meant to punish or ward of various forms of evil. However, as time past and the Joyan monks dwindled, the technique fell into obscurity. It's currently unknown how many practitioners of this spell exist, but it's estimated to be few in number.

Trivia

 * Out of fairness, this spell is classified as compatible with all forms of Ice-based Magic. This means that this can be used by any Ice Mage.
 * Like most of the author's created spells, this one was made out of pure boredom; it was created after reading the latest chapters of his favorite manhua.