13.
I drink the blood of the Earth,
and the trees fear my roar,
yet a man may hold me in his hands.
Riddle #12 - Answer: "a CHAINSAW!"
Letter #1 = c: Curve the fingers in a circle form and curve the thumb parallel to the pointer;
Letter #2 = h: With the palm facing the body and bent sideways and the thumb, ring finger, and pinky folded, extend the pointer and middle fingers forward;
Letter #3 = a: With the palm facing forward and fingers in a fist, point the thumb up touching the side of the pointer finger;
Letter #4 = i: With the palm facing forward, point the pinky finger up while the other fingers are folded with the thumb across the folded fingers;
Letter #5 = n: With the palm out and fingers in a fist, fold the thumb under the pointer and middle fingers;
Letter #6 = s: With the palm facing out and the fingers in a fist, fold the thumb to cover the front of the other fingers;
Letter #7 = a: With the palm facing forward and fingers in a fist, point the thumb up touching the side of the pointer finger;
Letter #8 = w: With the palm facing out and the thumb in front of the folded pinky, point up and spread apart the pointer, middle, and ring fingers.