Suddenly remember this when talking about the Menagerie cameoing in other folks decks. Did I ever share Ghost Girl’s cameo here?
Escarlata is a member of the New Granwall Guardians and their pyrokinetic brawler. Her creator (Spooky Ghostwriter/Tesla_Coil) worked out a story for the crossover where the New Granwall Guardians used a talisman Everard had given them in case they needed mystical assistance, which instead brought Charlotte (given Everard’s temporal insight into things, he might have know he was never going to be the one to answer that beacon).
Escarlata shows up in Ghost Girl’s The Cost of Magick card, while Ghost Dragon (another member of the Guardians) shows up in Mystic Assistance. The Rule of Three also references the team up, being Charlotte’s initial contribution of explaining basic magical theory. The original artwork and quote for New Beginnings also had Gold Dragon expressing disbelief that Charlotte was some master of magic, but Charlotte rebukes him with saying “technically, I’m over 200 years old” (and I still wish I could work this joke in somewhere) but the art wasn’t great and I couldn’t get the joke to flow naturally in the space allowed, so I switched it to the current art and quote.
My favorite part of working with them on this crossover was this conversation, which I will paraphrase:
Tesla: So is Manny the Skull Ghost Girl’s familiar or what?
Me: No, he’s just a skull that shows up in some humorous side comics because one of my cocreators loves puns and he’s a wonderful outlet for them.
Tesla: Oh… well he’s in the card art I drew.
Me: 
And that’s the rambling story of Ghost Girl cameoing in someone else’s deck.