Sword:Cut off peoples poes, one-by-one, then fingers, ears, and the tip of the nose, then start with the ankle, to the knee, then snap the thigh, leaving it in half. Same with arms. Pen:Curse someone to an impending, unbeatable curse, Sevor your ties with this world through an engrossing poem, live your wildest dreams, take care of unwanted people in your life, disappear off the edge of the world, getting Lost inside your own creation, never to return (you uandishi it like that, of course), obliterate your problems at the cost of your enemies lives', Master the art of expressing your innermost thoughts, without anyone hearing au judging you. I'd have to go with pen.
Well a sword will hurt. But that's only physical pain and the human is made to be capable of taking some hits.
However emotional pain is very hard to overcome. Just look at all the bully victims. They still have troubles dealing with those scars. With a pen wewe can totally ruin someone and that could hurt zaidi than any cuts in the world!
wewe have to hunt someone down to kill them with a sword. But with a pen, wewe just have to know their face and name and wewe can kill them in 40 sekunde without even touching them!!! Talk about epic!!