I used the mod in Badge 2851 in my world (vanilla rainforest) and this is what happened when I ran it! (Google browser, Mac with OSX)
Lightning doesn't strike in my simulator, but I do get three pigs.
Using badge starter code...
** Update: My son told me that lightning strikes turn pigs into zombie pigmen. Now I know why I have so many zombie pigmen in my world. It is pretty funny now, but wasn't when it happened. Hope this helps another noob!