All i want is for the ball to flash simular to the anime!
Well, many of us haven't seen it, so without a reference image, we can't really offer much help.
Although, from your description (and the other anime that I've seen), perhaps CC Light Burst on precomp containing some Fractal Noise in a small circle would do the trick.
Wait, if you're new to AE and not used to the effects yet, you should definitely start here.
Just to add to Szalam's link at the end of his post...
If you try using AE intuitively, thinking "How tough can it be?" you'll get a very rude awakening: it can be VERY tough without the basics.
So if you don't have the time to go through the stuff in that link, you might want to think about a Plan B for your project.
No idea what the effect looks like and YouTube isn't helpful based on your keywords.
In the end i used an eclips effect- but thanks all for your input and help and i assumed everyone knew what i meant by the 'pokeball effect' sorry next time i'll add a picture for more clarification.