Just watched FINAL PRAYER aka THE BORDERLANDS (2013) for the first time and holy hell. How did I never see this movie before?? Found footage, haunted churches, pagan rituals, folk horror, cosmic dread... This movie has it all.
Exactly the type of movie I love and that consistent, deliberate ramp up at the end leads to such a great WTF moment... Loved it. It's on Tubi. Go watch it.