yes lightening works but butterflies are cheaper.....the yellow masked children, most of whom seem to be named Rascal, are a real pain and have cost me several of the rare and uncommon relics and lab pieces....the adult yellow masks I can usually avoid because they stay close to their areas and when they go to the grove in a rain they use the same path pretty much. But the kids can and do go anywhere and everywhere even chasing my scientists out of the lab and they never seem to grow up...In one of my tribes Rascal must have a dislike of running cuz he moves at a snails pace and once when I had to use bees he got chased by them too and got stuck in the pools it was nice to be without him for awhile but when I opened the game the next day he was free and I thought darn it anyway why didn't he stay stuck. The kids and rascal in particularily are the worst and I find myself laughing at them even though they frustrate me.