Answer:
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I have a face, yet no senses. But I don't really care, because time is of the essence.
We are five little objects of an everyday sort. You will find us all in a tennis court.
Long and slinky like a trout, never sings till it's guts come out.
You saw me where I never was and where I could not be. And yet within that very place, my face you often see.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?