Can "and" be missed out in the title of the novel?

That depends on whether or not you allege that the heavenly sword and the dragon-slaying saber are one an the same thing. However, even if both titles refer to the same object, leaving the "and" out is damned awkward.

The heavenly sword and the dragon-slaying saber are matches:
the former is "female", the latter "male." Both are "divinely sharp" - king and queen in weapon arsenal.

for a fable its ineffably and totally eff able and so's the briquet sobriquet

The heavenly sword and the dragon-slaying saber identifies the duality

how about 'the sword and the saber' to make it sound as if it should be read

That is nor relevant to the issue--if they are two different items (keep the mystical bullshit to a minimum, OK?), then you have to have the "and." If it were one item, it would still sound awkward without the "and."

Laughoutloud, your bullshit never helps these people, who want reliable answers about the English langague. Instead, you just babble nonsense.

Would

Heavenly Sword vs. Dragon-Slaying Saber

be accurate?

Consider the title:

The sword and the saber

you need 'and the' to identify that they are separate and the adjectives are a distraction

speaking of distractions that other person said

Laughoutloud, your bullshit never helps these people, who want reliable answers about the English langague. Instead, you just babble nonsense.

oristar that second comma is redundant and langague might be misspelt

and as for babbling nonsense check out the spleen on this guy on other threads where he sticks his beak into the meek

Hmm, in regard to the Heavenly Sword and the Dragon-Slaying Saber being matches, it strikes me as a thoroughly Oriental way of thinking reminiscent of the idea of Yin-Yang. People who know if it know of its duality. But to clarify the duality for people who are ignorant of Yin-Yang, the conjunction "and" should be used to clarify its duality Yin and Yang.

I'm pretty sure that, like me, most people aren't aware of the duality of the Heavenly Sword and the Dragon-Slaying Saber. Using the conjunction "and" would help to clarify they are matched.

If you like, you could say "Heavenly Sword, Dragon-Slaying Saber". That conveys the idea that there are two items being spoken about, without adding another word.

Keep the context that the writer wants to include,feels is important to THEIR writing, to a minimum!??

Sounds like damn stupid advice to be offering