If snake has slid into your life....
Transmuting is the key:- You know that a fresh new wind is in the air and with that new wind comes transmutation and transforming energies of change, healing yourself from the old emotion inside out. As you change and evolve on your path, your old sense of self will grow and push gently further out what's not needed anymore.
It can also mean symbolically for deception but it usually is representative of changes and transformation, inner healing and reliant on your own personal instincts.
If snake is your totem guide, people with this guide usually come across as someone with a lot of charisma with a natural ability to balance the masculine and feminine energy together, they are very good at camouflaging energy and will hide if deemed necessary if only for protection of themselves.
They are natural born healers and some indeed are often along the shaman path. This totem is about personal change to personal evolution, inner healing and growth.