I have been a form of currency I’m essential for life, but too much of me can lead to death

I cradle elixirs, dark or bright, my stem elevates me into sight. I witness vows, toasts, and lore, held in hands, I ask for more.

An endless flow, A boundless river, I crumble empires, I stumble kings, before my might, even the mightiest quiver

My symbol is a winged dove People pray for me with love Tolstoy's story paired me with my opposite To achieve me doesn't happen overnight.

My first name is common, shared by kings and farmers alike. My last is like a leader who governs towns through the ages. I strum and sing with soulful flair. Who am I?