I'm fascinated with It, even though there's no chance in hell I'll actually see it. (I'm a horror film wimp, and I have no problem with admitting it.) But, I would actually love to see this deleted scene. It's sounds so interesting!
“There was a scene we shot that was a flashback from the 1600s, before Pennywise [was Pennywise]," the actor who plays the terrifying character [Bill Skarsgård] explained on an episode of Variety's Playback podcast. "The scene turned out really, really disturbing. And I'm not the clown. I look more like myself. It's very disturbing, and sort of a backstory for what It is, or where Pennywise came from."
Director Andrés Muschietti decided to cut the flashback scene, but Skarsgård hinted that there is a possibility it could surface in some form in a potential sequel ...
"That might be something worth exploring in the second one," he said, scaring us. "The idea is the 'It' entity was dormant for thousands and thousands of years. The [flashback] scene hints on that." (Ryan Seacrest)