First off, I love the name you've given this deck, Essence. I do think that there are ways that it can be improved, however. There seems to be four different types of decks that populate the Bronze league: Mono-Aether decks with the Oracle card forced in, Immorushes with the Oracle card forced in, Novabows with the Oracle card forced in, and fail decks with the Oracle card forced in. Seeing as how these are the four main deck types to guard against, your deck will obviously do very well, but I do have some relatively minor tweaks that may help it's overall win-rate.
The first tweak I can suggest is somewhat similar to what both kirchj and Bailey have suggested, insofar as to turn it into a PNbow rather than running it off of pillars. There are two things in particular that this build will do, one positive, the other, not as much. Building it this way allows you to work Reverse Times into the mix, yet still not be strained for quanta to evolve the Graboids. Reverse Times are usually a killer for so many Immorushes and Novabows, as they obviously rely on burst quanta to be able to play their creatures, so making them waste not only a turn, but a chunk of their precious quanta can take the wind right out of their sails. Unfortunately, this obviously does not allow you to run your Warden quite as often, but considering you only have the one you shouldn't run into this problem too many times. Obviously, this deck should beat the fail decks like they stole something whether you decide to tweak it or not. The Mono Aether, while problematic, also shouldn't be too much of a problem between the Fog Shield to help you mitigate damage while you wait for the Dimensional Shield chain to end, the Deflagration to speed up the Dimensional Shield chain's end, and the Poisons and Momentum that bypasses the Dimensional Shield altogether.
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If you feel that the Warden is straining your Earth quanta too much, there
is another minor tweak I can suggest, although you may have to change the name of your deck if you use it.
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Edit: Changes made to reflect kirchj's critique:
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