Necrophages, Harry Potter, Jack Vance, DCC… how related?

Dying Earth is a setting (originally Jack Vance books) for DCC. Dungeon Crawl Classics takes a lot of inspiration from the fictional reading list "Appendix N" from the AD&D 1e Dungeon Masters Guide. 

I noticed "Necrophages" exist in the Jack Vance books.  That translates to DeathEaters, like the badguys in Harry Potter.  

Jack Vancian magic is what D&D uses… the memorization per night/day. But DCC is the opposite, where you don’t memorize spells. 

And Thundarr is very much like the Vance Dying Earth I think, with the future Earth destroyed, science only partially exists as a branch of sorcery in a way. Mutants all over. 

Here's a wikipedia quote on Dying Earth: 

"Magic in the Dying Earth is performed by memorizing syllables, and the human brain can only accommodate a certain number at once. When a spell is used, the syllables vanish from the caster's mind. Creatures called sandestins can be summoned and used to perform more complex actions, but are considered dangerous to rely upon. Magic has loose links to the science of old, and advanced mathematics is treated like arcane lore."

Here's a quote from the Necrophages entry on the fandom site, it sounds pretty darn close to the idea in Harry Potter about memories from a liquid in a bowl:

One secret that Krann taught her was the process whereby the minds of others might be distilled into liquor. Drinking the broth allowed the user to taste the thoughts of the victim and savor their ideas and memories.

Heck, this continued quote from Necrophages even sounds like that movie Strange Days. Was it influenced by this book, it sure is similar?:

[Regarding the minds->liquor] Slowly it became clear that imbibers of this foul brew lost their sense of connection to the world about them. Food lost flavor, colors appeared drab and lifeless and any simple delight in living was lost. Eventually it seemed to the user that they were only truly vital when regularly drinking the slick black distillate.

And let's not miss this picture from DCC's Dying Earth... man it looks just like that early blighted area Caelid in Elden Ring (the game):

Is this released around 2023, 2024? So maybe it wanted to look like Elden Ring??

Caelid area in Elden Ring, year 2022.