There can be different versions of Druid activist vows. You might the following vows inspiring which has been composed by Joanna Macy (Active Hope, p. 202).
By the beauty and sacredness of Earth, Sea and Sky, I vow to myself and to each of you:
To commit myself daily to the healing of our world
and the welfare of all beings.
To live on earth more lightly and less violently
in the food, products, and energy I consume.
To draw strength and guidance from the living Earth,
the ancestors, the future generations, and my siblings
of all species.
To support others in our work for the world
and to ask for help when I need it.
To pursue a daily practice that clarifies my mind,
strengthens my heart, and supports me in observing these vows.