The muddy land instantly got frozen in place as the realm of ice and frost floor increased her mastery over her element. Helping her nullify the effects of Tauba's earth magic and getting out of his trap.
A sword made out of pure black ice came into her hands, as Nevermore came into effect.
And finally her eyes turned colder still as the reign of killers blinded her judgment, and removed every other distracting thought except killing Tauba. It was a skill that only focused on completing her goal, no matter the price she had to pay for it.
It was a skill she had taken from a God in return for a favor, something which she had yet to pay back.
…
If Rio had to name a few reasons about the change in personality of Katherine, from the novel's innocent girl to the current cold one, this skill that made her emotionless would also be placed at the top along with Noah's murder by his hands.