Zanbul and the I Ching
Influenced by the Taoist "I Ching" or "Book of Changes" Zanbul employs the yin and yang imagery of the binary trigrams and hexagrams as symbolic exchanges of positive and negative spiritual energies. As the separated incarnations of the godhead assert their influences of the realm, we see these I Ching symbols appear as an optional philosophical footnote for added meaning.
The Taoist view of the universe helps to see the rhythm of push and pull in Zanbul. Starting very simply in story one, we see how the world continues to complicate in theme, growing like a vine through story two, climaxing in the violent chaos of story three, and waning into a bleak wasteland in story four.
Zanbul and the Tree of Life
In an early flashback, we see the origins of a biological presence sprout from the interred Helm of Zanbul.
This "Tree of Life" archetype seems to have a form in human belief systems as a plant of birth - either biological, or spiritual. The conditions and form of the Tree of Life reflect the respective eras of the story.