Snake medicine

In my dream I was up on the Navajo reservation with a friend. We were outside her grandmother's hogan in the tall grasses. I picked up two translucent green snakes that I found near a juniper tree. I held one in each hand. Later, the aunt said I carried snake medicine--that those snakes I held bite with a venom for which there is no antidote. I woke up with the green color of the snakes fresh in my mind. Here's a sketch of them.