I love writing and I love things that rhyme or start with the same letter. I looked for some odd words, or those that one may not see a lot. Cataclysmic isn't seen much in comparison to "Cataclysm" as it is means to relate to a natural event, versus Cataclysm which is reference to the ACTUAL catastrophic event.
Cyanide was the first word I came up with to match, which I can't explain other than the fact it starts with C. Overall, I love my name (it's newer since my rebrand) and despite it being long, it suits my Archaic terminology and dark nature.