“Yes, indeed. However, the only monsters capable of inflicting level drain are really powerful undead type monsters. Normally, even finding one is a tough prospect, and amicably working with them is nearly impossible … But, fortunately, there is a powerful high class and friendly undead Lich right here!”

“Amazing! Unlike a certain useless goddess, you’re actually useful every once in a while!”

Just as Vanir frowned after being compared to a certain goddess,

“U-Umm… Liches do have the ability to inflict level drain, but unfortunately, I can’t inflict such a status effect at will. If a Lich attacks with hostile intent, they can inflict a random status effect while doing so, of which level drain is but one of them. Paralysis, sleep, fear, and curse are other possible results. There is also the possibility of inflicting life threatening status effects like instant death or petrification, so…”

***
Konosuba V16, Ch1.