Building an OU team, and decided I'd try Mega-Diance as a sweeper.
So I was trying to find this tool that I saw get used on YouTube, but I can't find the video and I can't find the website through searching. I will describe the tool as best I can in the hopes that somebody know what I'm talking about.
So basically, all of the Pokemon were visible, and the person clicked a type (e.g. Fire type), which eliminated all Pokemon weak to Fire. Next, let's say he clicked Electric type; it eliminated all Pokemon weak to Electric. The point is to see what Pokemon threaten the Pokemon you're using because you can't effect them very well.
If anyone can help, or needs further description, please :)