Complex sentence: Being the answer to GDI's Ion Cannon and Nod's Nuclear Missile, Rift generator needs to be charged before used, and when charged, it creates a rift on the target location which damages everything in it's radius of effect about 10 seconds.
Split into simpler sentences: Being the answer to GDI's Ion Cannon and Nod's Nuclear Missile, Rift generator needs to be charged before used. When charged and fired, it creates a rift on the target location which damages everything in it's radius of effect about 10 seconds.