Elements and Special Effects

Premiere Elements comes with a huge library of video effects. And it's capable of pretty much any effect you can imagine -- though obviously some more advanced effects are better created in a program like After Effects.

I don't know what you mean by a "disappearing" special effect, but you can definitely make it look like someone disappears. You can also use effects like Chroma Key and the Garbage Mattes to have several versions of the same person onscreen at the same time. But how well you do it depends a lot more on your skills than on the program's abilities.