The year 2021 is the twenty-ninth year of existence for Magic: The Gathering.
|January 28||Release of a mobile version of MTG Arena on Android early access.|
|February 5||Release of Kaldheim.|
|February 12||Release of Secret Lair Drop Series: Smitten|
|February 22||Release of Secret Lair Drop Series: Black is Magic.|
|February 25||Announcement of a new class of product: Universes Beyond, which will take outside IP's and bring them into Magic.|
|March 11||Historic Anthology IV becomes available on MTG Arena.|
|March 15||Release of the Kaldheim wave of Magic the Gathering Unpainted Miniatures by WizKids.|
|March 19||Release of Time Spiral Remastered.|
|March 23||Launch of the PC Open Beta for Magic: Legends.|
|March 25||MTG Arena adds support for iOs (tablets and iPhones).|
|March 28||Kaldheim Championship|
|April 1||Nic Kelman, controversial Director of Entertainment Development, leaves Wizards of the Coast.|
|April 2||Release of Challenger Decks 2021|
|April 7||First publication of the ongoing Magic comic by BOOM! Studios.
|April 23||Release of Strixhaven: School of Mages.|
|April 26||Release of Secret Lair Drop Series: Dr. Lair's Secretorium Superdrop|
|May 7||Release of Secret Lair: Ultimate Edition 2.|
|May 13||Magic esports announces that the MPL and the Rivals League will be retired after the 2021–22 Players Tour Season.
|May 14||Official retirement of Planeswalker decks, which are being replaced by Commander decks going forward.|
|May 27||Release of Historic Anthology V on MTG Arena.|
|June 6||Strixhaven Championship
|June 18||Release of Modern Horizons 2.|
|June 21||Release of Secret Lair Drop Series: All-Natural, Totally Refreshing Superdrop|
|July 1||Development of Pioneer Masters is put on hold for an unspecified time.|
|June 29||Barely four months after its Open Beta launch, the videogame Magic: Legends is announced to be terminated.|
|July 23||Release of Dungeons & Dragons: Adventures in the Forgotten Realms.|
|July 28||Release of the Strixhaven: School of Mages wave of Magic the Gathering Unpainted Miniatures by WizKids.|
|August 6||Release of the 2021 Arena Starter Kit.|
|August 12||Release of Jumpstart: Historic Horizons|
|August 24||Announcement Day|
|September 24||Release of Innistrad: Midnight Hunt|
|October 8-10||World Championship XXVII|
|November 19||Release of Innistrad: Crimson Vow|
|December 5||Innistrad Championship|
|Hall of Fame inductees:|
- Magic BOOM! comic (ongoing)
- D&D Unearthed Arcana: Mages of Strixhaven (June 8).
- Magic: The Gathering - Planes of the Multiverse visual guide (July 20).
- D&D Strixhaven: A Curriculum of Chaos (November 16)