Finally figured it out.

"Haha! In the end, you're just a bunch of foolish mortals," she laughed, not in anger but with a feeling of bloodthirsty.

Hylie collected himself and stood up to fight. He had transformed into a new person as looked as though he had just peeled off his outer skin. In the place of his blue hair stood a bunch of spiky green bangs with his black orbs replaced by a pair of enchanted emerald green eyes. His appearance gave him out as a green sorcerer.

Zyda flicked her finger and the dark wilderness whirled into a bare stark of forsaken land filled with boulders only. Her expression spoke revenge and bloodthirsty. The atmosphere was windy as the cold air vigorously blew their fabrics to and fro, seeping into their skins but it looked like the duo avengers were numb to the coldness.