In what is potentially one of the most unexpected crossovers around, Magic: The Gathering is getting a collaboration with My Little Pony. A three-card promotional set called Ponies: The Galloping will be available later this month with all net proceeds going toward Extra Life to benefit the Seattle Children’s Hospital.

These silver-bordered cards will be sold alongside matching playmats on HasbroPulse.com starting October 22, as well as four digital card sleeves available in Magic: The Gathering Arena. Flip through the slideshow below to see all the cards, sleeves, and more:

Cards, Sleeves, and Playmats in Magic: The Gathering's My Little Pony Charity Crossover 13 IMAGES

MTG Card Designer Chris Mooney told me their team “is always excited when we get the opportunity to work on a project like this,” having previously done something similar for 2017’s HasCon with promotional cards tied into Dungeons and Dragons, Transformers, and Nerf. With My Little Pony: Friendship is magic ending its ninth and final season on October 12, Mooney said “we wanted to create a special product for our Extra Life initiative this year. It seemed like a perfect fit and the perfect time for it.”

These are silver-bordered cards, which means they obviously aren’t actually legal in tournament play, but they do look the part. The three cards - Rarity, Princess Twilight Sparkle, and a double-sided card featuring Nightmare Moon and her Princess Luna transformation - have art that is “a blend of the My Little Pony and Magic art styles” by Andrea Radek, Jennifer L. Meyer, and John Thacker.

“ All net proceeds from the sale of this set will go toward Extra Life, benefitting the Seattle Children's Hospital.

Princess Twilight Sparkle’s effect even makes reference to other cards that don’t actually exist, like Applejack and Rainbow Dash, though Mooney says this was always meant to be a three-card set. When asked if they’d ever make those cards, Mooney explained that they have “nothing to share at the moment,” but that they have a lot of fans on the team and they “had a great time working with the My Little Pony team at Hasbro on this.”

As for how they picked these three ponies specifically, Mooney told me “each character was chosen for slightly different reasons.” While they said Twilight Sparkle was a more obvious choice as a central character, designed to be “a fun commander for a Pony-themed deck,” Rarity was chosen explicitly because of her name - as seen above, her effect even interacts with card rarity. Meanwhile, Nightmare Moon was picked because they wanted to feature at least one villain, and the transformation effect naturally came along with that choice.

If you're looking for tournament legal MTG, check out this video about its newest set:

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These limited edition cards will be sold exclusively as a box set for $50 between October 22 and November 5, or until sold out, through HasbroPulse.com (with delivery only to USA or Canada addresses). There will also be a three-playmat set for $100 during that time, as well as four different MTG: Arena digital sleeves for $3.99 each available between October 28 and November 4.

All net proceeds will be donated to Extra Life, a charity group that raises money for children’s hospitals through gaming initiatives, with these products specifically benefiting the Seattle Children’s Hospital. “Having the opportunity to celebrate the passion of these two communities in support of Extra Life is incredibly rewarding,” Mooney said, “and we hope that fans love it as much as we loved making it.”

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If you're a Magic: The Gathering fan, you might be interested in some of IGN's other recent tabletop coverage. We recently spoke to the creators of Dungeons & Dragons, alongside celebrities like the Russo Brothers, about why D&D is suddenly so popular again – and if you're new to D&D entirely, here's how to get started. We also just posted our list of the best board games of 2019.

Tom Marks is IGN's Deputy Reviews Editor and resident pie maker. You can follow him on Twitter