Extremely important point - In the end it is the question on the petition and your answer to it in good conscience that counts. NOT the opinions of other brothers on the meaning of the question and their answer to it. That was their answer in their heart in their good conscience. You need to read the petition and give your answer from your heart in your good conscience and that is ultimately the end of it. All of the rest of the discussion is supporting cast to that point. Read, ponder, answer the questions on the petition. If your sincere answers are yes, then you are welcome to come into our assemblies as a candidate coming up for ballot. The rest of my post is additional context.
Your religious membership as such should not even be asked by the investigating committee. Your answer is to confirm your belief in a supreme being, done.
In Florida it was recently made explicit that Wiccans are welcome as brothers there by voting down an edict that banned members of a list of faiths that included Wicca. I realize that's not an answer specific to Texas.
In California I know a number of Wiccan brothers. In some cases other members of their lodge knew and didn't care or even signed their petitions; in other cases other members of their lodge had no idea and that is how it should be according to our landmarks. I realize that's not an answer specific to Texas.
It is in our landmarks that we don't discuss religion. If you choose to not discuss religion your fellow members will never know, and that's as it should be. In my mother lodge I was very slow to discuss religion outside the building but I eventually found much wider religious diversity than I initially expected. This answer is general to nearly all jurisdictions and as such does apply to Texas.
Our landmarks make it clear that we admit candidates who do have religion and our charges make it clear we do not admit atheists. There exist states whose petitions include wording that is explicitly monotheist - The Texas petition has no such wording. That is a Texas specific answer. Some of our members may care but as a jurisdiction we are Masonic and our landmarks don't care - Read into this what you will and ponder on it carefully with regard to future discussion of religion inside and outside of our buildings. Some of our brothers have not thought through what their membership implies and our landmark does teach us to not disturb them in that status. This answer is vaguely worded on purpose and is specific to Texas.
Modern Wicca draws explicitly from Masonry so much of what we do will be found familiar and comfortable by Wiccans. In spite of the claims of age, modern Wicca is younger than modern Masonry. Please do not think that since modern Wicca draws explicitly from modern Masonry that the goals of the average Mason resemble the goals of the average modern Wiccan. You will likely find a higher percentage of the Wiccan population to be Masons that is true for other faiths because of this history. Not specific to Texas.
Our degrees tell a story from the Old Testament. Any member of any non-JCI faith needs to be very secure in their faith to be able to draw deep meaning from stories out of someone else's faith. This bit applies to Buddhist, Hindus and Asatruar as much as to Wiccans.
Wicca at least in theory teaches about a God and Goddess pair. The petition asks about a belief in the existence of a supreme being. If you can locate a Buddhist and you ask about their petition they tend to report pondering the word "existence" for a while. If you can locate a polytheist of one of the very many polytheist faiths that are represented among the brethren they tend to report pondering the word "supreme" for a while. I suggest that you look up the Grand Lodge of Japan which has many polytheist Shinto among their members and extend from that how to approach the petition. Not specific to Texas.
Elsewhere in the thread there was mention of a slippery slope. Admit members of other faiths and more will join. Absolutely. That slippery slope was jumped down centuries ago by deliberate choice early in the 1700s. Every religion is the world that you have heard of and many you have not heard of are represented among the brethren right now. This is deliberate. There are plenty of Wiccan brothers.
It was suggested that Satanists might petition. That was a canard, a logical fallacy that does nothing to establish a point of principle. It's a distraction. Satanism appears to be theoretically atheistic yet so is Buddhism and we have plenty of Buddhist members. While it might be interesting in a separate thread to discuss if a Satanist could be sincere in petitioning the topic has as much to do with the question of Wiccan brothers as does how much place Satan has in the Wiccan pantheon - Zero.