Asyndeton & PolySYNdeton Two forms of writing conjunction in non-standard ways.
ASYNDETON AND POLYSYNDETON BOTH ADD STYLISTIC FORCE TO WRITING BUT HAVE DIFFERENT USES OF CONJUNCTIONS.
ASYNDETON is one of the most expressive rhetorical devices to use.

It adds flair to a sentence by leaving out conjunctions in a list between clauses.
When there are only two clauses, using an asyndeton will define the second clause as a clarification of the first
In a list of more than two clauses, asyndeton can give the impression that the list you created was spontaneous rather than structured traditionally and has a faster pace rather than a long, dragged out list.


POLYSYNDENTON is the stylistic opposite of asyndeton
"Poly" implies that there is more than one conjunction being used.
The reoccurring use of "and" in this rhetoric device adds urgency and power, forming a hypnotic rhythm.
Ex. "The runner past the ten-mile mark and the fifteen and the twenty, and the finish line loomed infront of him."
Although the conjunctions being used become punctuated beats, the punctuation itself is determined by the writer.
POLYSYNDENTON is also an effective way to give a list of important attributes or ideas with immediate force.
Ex. "The banquet table was a riot of beef and pork and lamb and fish and fresh vegetables and candied fruits and all sorts of wonderful dainties."

Overall,
ASYNDETON and POLYSYNDETON are both powerful, creative, rare, stylish, non-standard...
BUT
Are only effective if used sparingly and correctly and at the right moments.
(And not in the same sentence, like me) 😅