Such an oath may be like this:
"I swear by the welfare of my soul that I will always keep and protect our beloved home planet the Earth and never intend to harm her in any way, I will never abuse the druidic magic and lore for bad purposes and I will always be a good server for the highest command. Perjuring will prove that I am unworthy to get consecrated in the secrets of creation and to perceive the divine truth."