After his one attack, Qin Ruo beheld the field of fallen Thunderbirds, and finally felt able to relax a little.
After two days and nights of fervent experimentation down in the Underworld, he was satisfied with the results of his training: his custom-made Tier 5 attack spell, the Fatal Frost Crystals.
Much like his Tier 4 Frostburst Blade, it was an evolution of Xiaoxiao's original creation: the Compressed Frost Bullet.
However, compared to the unstable, barely contained power of those other two spells, with the addition of the Shift technique, the Fatal Frost Crystals demonstrated the ultimate manifestation of the Chilling effect. Even the inherently random thermal forces were harnessed and given direction, overcoming the flaws of the previous versions to produce a perfect, complete, and fully developed spell.