Updated: Jul 14, 2020
Announcement Date: June 1, 2020
New Companion Rule:
Once per game, any time you could cast a sorcery (during your main phase when the stack is empty), you can pay 3 generic mana to put your companion from your sideboard into your hand. This is a special action, not an activated ability.
Agent of Treachery is banned.
Fires of Invention is banned.
Agent of Treachery is suspended.
Fires of Invention is suspended.
Tabletop Effective Date (Rules and B&R): June 1, 2020
MTG Arena B&R and Companion Rules Effective Date: June 4, 2020
Magic Online B&R Effective Date: June 1, 2020
Magic Online Companion Rules Update Effective Date: June 3, 2020
The list of all banned and restricted cards, by format, is here.