Chapter 173
Sky cutter; a spell Grey managed to create on his own in a bid of looking for something destructive that could wipe out a large number of opponents at once. Although he had a lot of spells to do that in his arsenal, he wasn't satisfied.
Which led him to develop sky cutter which could only be used to destroy a large number of enemies at once, destroying whatever defenses that they had in one smooth motion.
And since it was made of wind attribute, it was both fast and silent that the enemy unless they were tremendously fast enough, they wouldn't be able to avoid it in time not until it has done what it needed to do which was utter destruction.
