The so-called Miracle of Sexual Intercourse: The word "miracle" here is used to refer to divine DnD-style spells.

both parties will gain a blessing that confers a permanent ability boost should the man ejaculate inside.

Would all of you care to participate?

When a man engages in sexual congress with a virgin whom he has a close relationship with

while being blessed with divine protection,

If it's for the sake of defeating goblins,

then I don't mind.