Because regular lightning is not scary enough, here's T-Rex lightning

Nature is terrifying. It's got (well, it had) terrifying dinosaurs roaming on Earth, the scariest of all being the predatory Tyrannosaurus Rex. And it's also got lightning, in which huge bolts of electricity just randomly strike the ground from the sky. 
Now, combine the two. 
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A photo posted on Facebook by the U.S. Department of the Interior depicts a lightning strike at Blue Mesa in Arizona’s Petrified Forest