Answer:
With three leaves, I am just a plant. Add another leaf and everyone will want me for good luck. What am I?
What breaks when you say its name?
I am a kind of coat that can only be put on when wet. What am I?
I am owned by Old McDonald.
You went into the woods and got me. You sat down to seek me. You brought me home with yourself because you couldn't find me. What am I?
When is it bad luck to see a black cat?