Answer:
A slow, solemn square-dance of warriors feinting. One by one they fall, warriors fainting, thirty-two on sixty-four.
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
Has no feet, but travels far. Is literate, but not a scholar. Has no mouth, yet clearly speaks.
A thousand colored folds stretch toward the sky. Atop a tender strand, rising from the land, until killed by maiden's hand. Perhaps a token of love, perhaps to say goodbye.
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?