One of my all-time favourite book openings is right here in these pages.
It is important, when killing a nun...
“It is important, when killing a nun, to ensure that you bring an army of sufficient size. For Sister Thorn of the Sweet Mercy Convent Lano Tacsis brought two hundred men.”
Few stories set the tone from the opening line. Anything that suggests a single nun can take out two hundred (or more) soldiers by herself speaks of a rollicking tale to come.