This is pretty much a spell request. If you want these things done, look at the spells section and figure out triggers. Or you can learn the hard way and not use forums like most of mappers. I know I speak for myself and (probably) quite a few others when I say that you cant just wake up one mourning and make some spell of the top of your head, just like a week after starting to look at the trigger editor. These things take time, and cant be rushed. So if your a noob, then dont freak out. Make some friends who can do the things you need for a map, or gradually do them yourself. You dont usually learn somthing like this by reading stuff, you have to look at it and then make stuff through trial and error.