Complex sentence: Gengar have the ability to lay curses on their foe,, and it is said to steal the lives of those who become lost in mountains by overtaking the prey's shadow and silently waiting for an opportunity.
Split into simpler sentences: Gengar have the ability to lay curses on their foe. It is said to steal the lives of those who become lost in mountains by overtaking the prey's shadow and silently waiting for an opportunity.