Not a good idea to just mass casters, since you basically have no real tank unit to protect yourself when your partner is out creeping a little bit. And night elfs with dryads and bears pwn mass casters. If your gonna mass casters, make 8-10 tauren, then youlll get better results. Heck you can kill off a whole enemy base yourself like this. Although mass casters does has an advantage if the enemie has a crappy computer and has Special effects on, they will lag horribly in the chaotic scene
