"After directing the hyper-successful, Infinity-Saga-ending Avengers: Endgame, directors Anthony and Joe Russo have a new project: adapting the 26-year-old collectible card game Magic: The Gathering for the small screen.

Netflix announced Monday that the Russos would team with Wizards of The Coast and Hasbro for an animated series based on the mythology of the fantasy game. The Russos will “oversee the creation of an all new storyline and expand on the stories of the Planeswalkers” (sorry, Urza’s saga hopefuls) and will see the heroes and villains of the universe “contend with stakes larger than any one world can hold.”

“We have been huge fans and players of Magic: The Gathering for as long as it has been around, so being able to help bring these stories to life through animation is a true passion project for us,” the Russos said in a joint statement."

https://www.polygon.com/2019/6/3/18648018/magic-the-gathering-netflix-series-joe-anthony-russo

Apparently it will be an anime.

I'm definitely down for this. And coincidentally there was recently some anime based card art for cards released in Japan, featuring famous Japanese artists.

MtG has Anime cards?

Guess they need a little breather from super high budget movies. They directed Community before they went to the MCU which was a show I really loved.

Only the recent expansion (War of the Spark) has alternative anime art for the planeswalker cards. There's a 50% chance to get the anime art.
The first card art I posted here is by the famous Final Fantasy artist Yoshitaka Amano who does cover art for many of the games.

Awesome!

The paintball episodes were what got Marvel interested in them as directors for their movies! Community is such a fantastic show

So are they going to use the books, or is this going to be another one of those adaptations who decide to not use the source material because of copyright?

Says in the OP.
"oversee the creation of an all new storyline and expand on the stories of the Planeswalkers"

Aaaah, I missed it. My bad.

Also, how come noone actually follows the source material anymore? If you make an adaptation of something, wouldn't be wise to actually use the stuff that's already written and proven to work?

It would depend on if they are covering events that have already happen or creating new events within the universe.  For something like MTG, they can create new adventures and add whatever character they want.  They can also source different planes and events depending how how epic they want to make the series.  Personally I am very interested to see what they do as there is definitely a huge base of material for them to work with.