I dont even know what Lightball is, I haven't played a pokemon game since Leaf Green
That's an item that Electric Pokemon usually carrying, but mostly Pikachu hold it and you only have at least 5% chance to get it with general Pokemon, OR 20% if you have a Pokemon with a move that easily attaching the wild pokemon that held an item (Sorry that I couldn't remember that move name... It ended with "Eyes").
What's Light Ball?
American Sign Language is my primary language - deal with it! "ESL" is standing for "English Sign Language", period.