Metagame concentration
How few decks Pioneer is, month by month, against every ban on record. Each point is the chance that two decks drawn at random from that month's field are the same archetype (the Herfindahl–Hirschman index), shown as the number of decks a field that concentrated is equivalent to. How this is calculated
Lower means more concentrated. Months pooling fewer than 200 classified decks, or fewer than two events, are left blank rather than plotted — below that the reading moves more with how much data the month held than with the format. Decks the classifier could not name are excluded; each point's tooltip reports what share of the field that left.
Tier history — top archetypes
The 8 biggest archetypes by meta share, on one axis. Each line is the score its tier is computed from, so a ban or a set release shows up as the whole field rearranging.
The Y axis is the score each archetype's tier is computed from: for measured points a 60/40 blend of MTGGoldfish meta share and TopDeck top-8 appearances, for reconstructed ones the meta share our classifier derives from standings. Dashed horizontal lines mark the tier thresholds.
The shaded span left of the dashed vertical line is reconstructed from historical standings (issue #214), not measured at the time; those segments are drawn dashed, and they break rather than join at the changeover because no single reading bridges the two. The two eras are scored against different denominators — a reconstructed share is a slice of our classifier's archetypes, a measured one a slice of MTGGoldfish's curated list — so compare shapes across the line, not values. D tier is reconstructed-only — the live writer floors at C — so a line can step D→C at the changeover without its score moving.
Deck costs estimate an average list at each card's cheapest printing across all printings, promos and reprints included.
S-Tier
Meta-defining archetypes (≥10% meta share) (1 archetypes)
A-Tier
Competitive tier archetypes (5-10% meta share) (4 archetypes)
B-Tier
Viable archetypes (2-5% meta share) (8 archetypes)
C-Tier
Low-meta archetypes (1-2% meta share) (34 archetypes)
Sultai Midrange
Jeskai Lessons
Izzet Aggro
Sultai Scapeshift
Mono-White Humans
Rakdos Sacrifice
Boros Midrange
Abzan Greasefang
Temur Lessons
Golgari Food
Izzet Ensoul Artifact
Selesnya Angels
Orzhov Midrange
Temur Indomitable Creativity
Mono-White Token Control
Azorius Control
Boros Convoke
4c Scapeshift
Azorius Spirits
Hidden Strings
Azorius Flash
5c Midrange
Gruul Prowess
Dimir Rona Combo
4c Artifact Sacrifice
4c Elementals
5c Enigmatic Fires
Izzet Lessons
Mardu Fires of Invention
Dimir Control
4c Auras
Boros Prowess
Quintorius Combo
