In Lancelot's arsenal, in terms of sharpness, Starlight Strike undeniably holds the champion's title, followed by the Sword of Zariel in second place, while Frostslash, enhanced by the Qingyuan Sword Technique, only ranks third, and there's still a significant gap between it and the top two.
However, Liches are not known for their robust armor or extraordinary life force. Any of these weapons are more than sufficient to deal with such foes, assuming you can actually strike their body. That assumption was precisely why Lancelot was willing to take the gamble—Peyton Derrick could not have imagined anything that could threaten its core from such a distance. Even if it did, it would be impossible for him to react in time.
