MTG · English · TBD
Mystery Booster Playtest Cards 2021
Magic pages should feel like an illuminated archive: rules-heavy, history-aware, and serious about print treatment — anchored right now by Slivdrazi Monstrosity.
Cards tracked121
Variants tracked1
Market floor$0.14
Grail card$14.74
Set index
A tradeable basket for the whole set.
Complete set basket$58.23121 priced cards roll into the current estimate.
Chase basket$28.72Tracks the highest-signal cards instead of the long tail.
Raw lane basket$0.48Useful for estimating where the body of the set sits today.
Coverage is live on 100% of the set right now, which is enough to show the market center even before the long tail fully fills in.
rare is the dominant rarity band in this release, while Sorcery is the strongest card-family signal on the page today.
Magic collectors want chronology, finish awareness, and context about why a card matters across formats and eras.
Set pulse
Real activity where we have it, honest signals where we do not.
Activity is still forming for this set. The price coverage and chase basket above update as VaultStore listings and sales deepen.
Rarity mix
Where the card count is concentrated.
rare121
Trusted sellers
The best current storefronts touching this lane.
Trusted seller rankings will fill in here as more live listings attach to this set.
Related sets
Continue the chronology.
Temperature index
Heat signal across the full set.
On Fire10
Heating Up74
Cooling14
Top movers
The strongest gainers right now.
Cooling off
Cards losing momentum in the current window.
Completion tracking
Built for real set goals, not generic wishlists.
0%owned
VaultStore completion tracking is designed for any-copy, any-variant, grade-specific, and language-specific goals. This page already knows the full card map; the collector layer sits on top of it.
Sign in to import a collection CSV, auto-claim VaultStore purchases, or manually mark cards as owned.
Collector guide
Why this set matters right now.
Reserved List icons, Commander staples, foils, borderless treatments, and modern premium printings all route through the same browse surface.
Foundations is the cleanest current on-ramp for cataloging modern staples.
Beta and Arabian Nights remain the benchmark history surfaces every serious collectible page gets measured against.
Set overview
A destination page, not just a listing grid.
# Mystery Booster Playtest Cards 2021 Mystery Booster Playtest Cards 2021 represents a retrospective collection of experimental designs from Wizards of the Coast's internal testing archives, officially released in 2026. The 121-card set documents mechanical exploration that occurred during the 2021 design period, offering insight into cards that never reached standard production. This release holds particular significance for competitive and casual players interested in understanding design philosophy and rejected mechanics. The set contains several mechanically ambitious pieces that exemplify ambitious design space. Slivdrazi Monstrosity merges two creature types previously kept separate, while Planequake introduces novel land destruction mechanics. Sliv-Mizzet, Hivemind combines color pie elements in unconventional ways. Mirrored Lotus provides mana acceleration through unusual symmetrical effects. The inclusion of Banding Sliver demonstrates Wizards' willingness to revisit archaic mechanics in new contexts. These cards collectively illustrate the experimental nature of internal playtesting and the creative risks that inform published Magic design.
A great Magic catalog page needs to explain finish splits, print treatments, and why the set still matters across formats.
Top cards to collect
FAQ
What makes Mystery Booster Playtest Cards 2021 important for collectors?
Mystery Booster Playtest Cards 2021 sits inside the live magic archive. and matters because it combines set identity, chase hierarchy, and live market behavior in one place.
