Answer:
Long and think, red within, with a nail at the end.
It holds no blessings in disguise. Its rhymes are aimed at your demise, it's cast only to ruin, Whatever you are doin'.
My children are near and far. No matter that I know where they are. The gift I give them make their day. But if I were gone they would wander away.
It is greater than God and more evil than the devil. The poor have it, the rich need it, and if you eat it you'll die.
I can move even when you are still. I can be one or many.
If you can spot one of these eastern warriors, it means they're not doing their job right.