The cells of a vampire were too potent and strong. Any small mishap while handling it might even create a clone of Bertham.
And if not dealt properly, then if used as a serum, something similar would happen to Alfin's own body as well.
But that is only when there was no god involved in this matter. Alfin believed that Makyr's mother wouldn't be so uncaring to sacrifice the vessel of her daughter to a vampire.
Hence the reason why Alfin was so confident in his success.
"I request for your help here. Pray that this body of mine doesn't fall before the birth of your daughter." Alfin said to himself, ignoring the disturbed gaze of Yelwis, who treated him like someone mad.
Though, he turned his head back on his snacks while watching some shows on a holographic screen.
'No wonder she left him.'