The shop that Spike got the comic book from

 
somebody make this edit, now.

From there or from a store Discord himself manages.

About time we see some of the consequences of living in a world with real magic shops.
 
Also, do they sell Jumangi?

@Blissey1  
Chinese, always a good source of those tainted goods.

@SeraphimDawn  
lol

It’s run by some stuffy, goateed pegasus called Cirrus. Word of advice, don’t ask about his brother.

@TagAnon  
Reference?

Stores in Equestria are awesome. Enchanted comic books, power-enhancing relics, and who knows what else?

@Frostwolf123  
They had to pull it off after protests from animal right organizations, the buffaloes for example claimed the way the game treated them abhorrently speciest.

They also sell frozen yogurt!

@Ninoyiya  
Which the proprietor calls frogurt!
 
It’s also enchanted.

@ClownDicks  
But it comes with your choice of toppings!

@ClownDicks  
Yes, seems like nobody else caught it though.
 
Seeing as this episode had a comic book that could send you to another reality, I thought referencing to the Myst series and its linking books would be fitting.
 
||Sirrus - that guy trapped in the red book from the first game - || was the easiest name to ponify.