when I was 2nd grade I was dreaming that I was with my class swimming in somekinda pool, but I didn't swim. I was with my friend Kate on somekinda tree, then I looked down and I saw somekinda little-round warning sign with dolphin on it (like don't jump into water) and then I picked it up and suddenly a nun appeard, with white-pale face, smiling wide with sharpy teeth, she was floating like a ghost but she was made of blood and flesh, and no eyes. she was trying to take my soul or something, and when I was running from her, she touched me and she tooked my soul (and I was dead in the dream) and then I woke up. Then few years later I dreamed that same nun, but it was different story. I was with my friend Kate again on somekinda big valley(like there's no end of it) and then I ran into a boy from my class, and when he pumped the tires of some stand, I picked up again that warning sign with a dolphin on it, and then the big building apperad and just behind the corner the nun appeard and then I said: "Hey wait, didn't you took my soul?" And then she screamed like hell, I actaully heard the scream. I was so freaked out that I woke up and asked my dad was I screaming, he said:"No, why?" I said nothing.
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so about the 'if you die in your dream, you'll die in your life' I don't believe it, cause it's a dream, but it can something similar happen.
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this isn't a dream or something, it's more like of a story when people were believing in fairies, witches, ghosts and bla bla.

my gramma told me, when her grandpa was going somewhere, he heard something was behind him. so, he went forward, and as he was going forward something was going forward as well, and when he would stop, something would stop too. so he turned around to see what it is, he saw a white horse, on the horse was the man without his head, and the man was holding somekinda sword, and how the sword was dragging on the ground, from the sword was going a lot of sparks.