Answer:
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
It's like food but water kills it. What is it?
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
Scythe of darkness, Shadowโs light. Guiding eye of thirteenth sight.
What has thirteen hearts But no body or soul?
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?