Update 12-02-2021: As we’re slowly approaching the release of Strixhaven, more and more tidbits about the set are being leaked, released and speculated on. Therefor a small update with the latest news surrounding this set
It is become know that Strixhaven will be the Commander 2021 set, thanks to this post on Reddit
Also, MaRo has specified that the set will be a bottom-up design. Causing many speculation about an instants/sorceries matter set!
18-01-2021: We don’t know much about Strixhaven at this point.Except for that Strixhaven is the name of a school, on a new plane of which we don’t know the name yet.
I do have my suspicions that these 3 cards from Commander Legends feature the Strixhaven plane (whichever plane that is)! /hype
Update 18-01-2021: Strixhaven’s number of MDFC’s will be closer to Kaldheim than to Zendikar. When WOTC moved MDFCs into Zendikar Rising and Kaldheim, it moved us away from our original plans for Strixhaven which had a higher as-fan of MDFCs. Source: Blogatog
New Keyword Abilities
Chances are that Spark is a new keyword ability in Strixhaven. This ability has been previewed on a Mystery Booster Playtest card called Blood Poet. Ofcourse, the implementation of the Spark ability as featured on that card might have changed over time, even the keyword’s name might have changed.
Things we know about Strixhaven (with source):