Answer:
A warrior amongst the flowers, he bears a thrusting sword. He uses it whenever he must, to defend his golden hoard.
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.
Sometimes black, sometimes white, I have veins but no blood
To cross the water I'm the way, for water I'm above. I touch it not and, truth to say, I neither swim nor move.
What is lengthened by being cut at both ends?
What is always coming but never arrives?