Simplify the following text for a Grade 10 native English-speaking person.
Original: One additional item new to the series is the `` Lightning Cloud '' , which raises the user 's top speed briefly , but shrinks the user if it is not passed on to an opponent by colliding with them .
Simplified: One new item to the series is the `` Lightning Cloud '' , which raises the user 's top speed briefly , but shrinks the user if it is not passed on to an opponent by colliding with them .