If I were a magic pen, how to write the composition?

I have been very touched since I read the fairy tale "A Good Horse with a Magic Pen".

I thought, "if only I could become that magic pen and benefit the people!" " "

However, once, I really became that magic pen, and I wanted to draw a computer for myself to make learning easier. But on second thought, one should do more good for the people. I suddenly came to Wenchuan. There was a big earthquake, and their homes were in ruins. I immediately drew several tall buildings and a beautiful campus, so that people there have a place to live and study. I always feel that something is missing. Ah, I remember. I also want to draw their families for those who have lost their loved ones, so that they can have a happy family.

I came to another village. There was a family that was very short of water. Their whole family is dying of thirst. I drew them with running water. The whole family jumped with joy.

I drew the third and fourth times. ...

However, after three months, my magic disappeared. I hope to have some magic and continue to benefit the people.