Commander 2021 consists of five enemy-colored preconstructed theme decks, similar to Ikoria Commander, and features 10 premium foil commanders. There are 81 new cards legal in Vintage and Legacy (1 uncommon, 70 rares, 10 mythic rares). These are set on the same plane as Strixhaven, though the reprints can be from anywhere.
As part of a larger push toward moving away from plastic packaging, this product features reduced plastic packaging. Each package contains 1 foil-etched display commander card (replacing the oversized cards from previous Commander sets), a 100-card deck (including 2 regular foils), 10 double-sided tokens, 1 deck box and 1 life wheel.
The new 70 rares and 10 mythic rares from the Commander 2021 decks are available in an extended-art version. These may be found in a dedicated single slot of the Strixhaven: School of Mages Collector Booster. These extended-art cards are only available in non-foil. Of note, the rares and mythic rares that are reprints in the Commander 2021 decks aren't found in Strixhaven Collector Boosters. [source]