Astrid has always believed that the so-called trump card is a tool to be used at the right moment, rather than something to be kept hidden until one's death, unwilling to reveal it to the world.
Facing a power that might be on par with the Sword of Light, hiding her true strength now would likely lead to her demise without even knowing how she died.
"...Lowering the temperature reduces the activity frequency of elemental particles, thereby controlling and restraining substances including gases."
As the ancient incantation was fully chanted, the deep blue brooch on Astrid's chest radiated a brilliant blue light.
The suddenly lowered temperature effectively slowed the spread of the dark mist.
With the wind-blessed hairband fluttering continuously, the flowing wind also became strong and orderly, even pushing back the deathly aura and revealing the barren land that had been eroded by it.
