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The Diamond Curse
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Author Liz Marsham
Illustrator Unknown
Published on January 8, 2019
Published by Unknown
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The Stolen Magic TBA (featuring Piper)

The Diamond Curse is one of several original novels inspired by Mysticons. It is an adventure taking after "The Dragon's Rage" and after another episode, featuring Princess Arkayna; the eldest Princess Twin of Gemina and leader of the second generation of Mysticons.


Mysticon Dragon Mage, leader of the legendary Mysticons, Princess Arkayna is looking forward to a ride on the fanciest train in Gemina with her team members. Adding to the mystique: the train is also carrying a famous diamond―with its own famous curse.

But when a villain from the Mysticons’ past tries to steal the diamond, the curse unleashes an ancient evil. Now trapped on a runaway train, the Mysticons have to band together even as forces of darkness become determined to tear them apart.




  • Eddie (debut & last appearance)
  • Linden (debut & final appearance)
  • Millicent and Myrtle (debut & final appearance; spirit forms)


Animal Sidekick

Griffin Mounts

Other Creatures




Mysticon Weaponry

Mysticon Powers

Magical Objects


  • Kiirin Train (debut)


  • Even though she was mentioned in The Secret of the Fifth Mysticon this is the first appearance of Kymraw and her Orc followers in the chapter book series.
  • As a girl, Princess Arkayna learned of the mystical Draco Diamond from her mother.
  • Princess Arkayna kisses Malavaron a second time since their first date in Episode 28.
  • Emerald is revealed to have collection of Twinkly Mares.
  • This takes place long before "Game of Phones" as the Mysticons' identities remain secret.
  • It is suggested that Piper lost parts of her memory, as Princess Arkayna implies to the reader that she has "a memory full of holes".


  • Piper: "Wowie, kazowie! Just look at all the shinny on that thing."
  • Zarya: "You said, Girl. scrape the gold off just one of those cars, and everyone in the Undercity eats free for a month."
  • Princess Arkayna: "Zarya, be careful."
  • Zarya: "What? Tell me I'm wrong."
  • Emerald: "You're wrong. Sorry. It's just, there's no way that's gold. Gold is way too soft."
  • Piper: "Are kirin bellies really purpeople? I'm never seen one."
  • Zarya: "I don't think anyone has, Pipes. Kirins might not even exist."
  • Piper: "Aw! I bet they're around somewhere. They're too fab-tacular not to be! Look at that thing! Like a unicorn and a dragon had a baby! A really big baby."
  • Doug: "Now I really I were coming with you."
  • Malvaron: "You know w can't. Today it's all 'riding the lap of luxury'. But once this train gets where it's going..."
  • Doug: "I know. big retreat. Mysti- I mean, uh, girls only."


  • Zarya: Okay, now that thing could power the whole city for a year."
  • Princess Arkayna: "Only if you could get close enough to spend it. That's the Draco Diamond."
  • Emerald: "Isn't the Draco Diamond..cursed? They're putting a cursed diamond on our train?"
  • Malavaron: "Ah, don't worry. The curse only happens if you touch it. So as long as no one touches it. Ta Da! You're safe."
  • Princess Arkayna: "Malvaron's right. My mom told me about the Diamond when I was a kid. We usually kept it locked in the treasury, so no one could get it. But a new museum is opening Firbolg's Bluff and Gawayne agreed to lend the diamond out for an exhibit there. "
  • Emerald: "Your stepbrother is lending out a cursed diamond!?"
  • Princess Arkayna: "Well, it's more 'showing off' than lending out. The museum has to display it with a sign that has his name in big letters and the words Extremely Generous Benefactor. And his picture. That's our king for you. Anyway, the last car of the train is specially built vault, where they'll lock the Diamond up, so 'ts not like we'll be eating right next to it.But I admit, I'd always wanted to see the Draco Diamond up close. They say it can take over your mind; make you do weird stuff. Some people say they've started to get strange ideas from just from being around it, and that odd things happen when the Diamond is nearby. It sounds scary, but I always wondered... "
  • Zarya: "Yeah. I'm wondering some things myself. Who are these people you're talking about? And how hungry for attention must they be to tell these dumb stories? A cursed diamond? Seriously? A rich dude clearly made that up to keep other dudes from touching his stuff. That's all.If I could get that case open, maybe I'd rub my greasy hands all over- Hey!!"
  • Piper: "Yikes, Z. What gives? Did you suddenly need...everything?'
  • Zarya: No. It's just...I don't know. It felt like it just flipped over. Maybe someone bumped me. But I know it was closed. I always fasten my bag."


  • Piper: "See? He's useful. Are super sure we can't take him with us?"
  • Malvaron: "Boss' orders. Nova Terron wanted you four to train by yourselves. No other distractions."
  • Zarya: "Choko isn't a distraction."
  • Princess Arkayna: "Zarya, we had this argument with Nova Terron yesterday and we lost. I want him to come, too, but it's only for a week."
  • Emerald: "And we'll be sure to save you something tasty from the train,too. So have a good week. You can play with my Twinkly Mares while I'm gone."



Far from Drake City

Shivermist Mountains