Actually, it should be all non-other pillars for the text, just in case Zanz decides to include more pillars in the game.
Going by flooding, non-neutral.
some comments:Neutral pillars do not exist - They are called quantum.Fire already has 2 quanta generating card other than the pillars and pendulums which are brimstone and cremation. This would be redundant.Why not extend than to all elements: All Pillars and Pendulums (except quantum) generate an additional quantum from your mark.
Streams do not stack.The cost should be higher. A devourer cost 2 . Random quanta worth a bit less than fix ones and here the effect is multiplied by the number of pillars.
1. Yes, they exist, and they are called quantum.
2. Fire is just first on the list of elements, there would be one for each element.
3. There is a stream for each element. I want it to be possible to generate quanta not matching your mark, to bring in more deck possibilities.
4. I agree, it costs too little. I'm not sure how much it should cost, but I want it to be other quanta.