This simple worksheet has four topics students can write about using "if." First, I checked all of the questions with the kids to make sure they understood. I emphasized that "magic lamp" is like Genie from Aladdin.
In my classes, we asked the students to answer each question, then write one additional sentence per question. After students finished writing, I chose a few random students to share their ideas with the class. If any students wrote something especially interesting, I'd encourage you to "randomly" call on them to share. This is a good chance for them to be creative.
Again, it's very simple, but it's easy to understand, and all you have to do is print it!