Weeping Sky wasn't only for slaying Dragons; it was also a true Legendary Weapon.
Its sharpness was ranked among the best among spear-type weapons.
Marvin didn't use Sodom's Blades because he hadn't fully grasped their power yet.
The Snake Witch was a very formidable enemy. If he didn't take the advantage with this sneak attack, it would be very easy for him to fall into the predicament of fighting a powerful caster.
This would be detrimental to Marvin.
Weeping Sky was as sharp as Marvin had imagined and directly pierced through the viper's vitals.
As the blow landed, the entire rock pile shook.
Marvin had used too much strength, and the spear pierced through the rocks.
Even though the viper was frantically struggling, she still couldn't escape.
But the Snake Witch reacted very quickly, rolling up her tongue and then striking at Marvin's waist.