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Reality Fracture (1,030 decks), compared with The Hobbit (1,387 decks)

New cards by set

Cards first printed in the set · share of decks that can play them

– means fewer than 3 decks. Picked up later: the share clearly rose after the release window (10+ decks, |z| ≥ 3).

Built more

HOB → FRA
▲ Umezawa's Jitte Unbanned 0.9% → 3.0% 12 → 31 decks
▲ Spelunking 0.4% → 4.0% 2 → 13 decks
▲ Sign in Blood 2.3% → 7.1% 13 → 28 decks
▲ Long River's Pull 0.2% → 2.5% 1 → 10 decks
▲ Otawara, Soaring City 21.2% → 30.2% 120 → 119 decks
▲ Urza's Cave 0.6% → 1.9% 8 → 20 decks
▲ Ancient Tomb 6.8% → 10.3% 94 → 106 decks
▲ Unwanted Remake 0.4% → 2.7% 2 → 12 decks
▲ Boseiju, Who Endures 32.5% → 43.2% 155 → 142 decks
▲ Changeling Outcast 1.8% → 5.3% 10 → 21 decks
▲ Maze of Ith 0.7% → 2.1% 10 → 22 decks

Built less

HOB → FRA
▼ Diabolic Intent 6.2% → 1.8% 35 → 7 decks
▼ Reckless Lackey 1.9% → 0.0% 11 → 0 decks

Commanders

Share of decks · each builder counts once

No commander changed clearly. Closest to a trend:

▼ Grist, the Hunger Tide 0.9% → 0.2% z = -2.3
▼ Ayara, First of Locthwain 0.5% → 0.0% z = -2.3
▼ Emry, Lurker of the Loch 0.9% → 0.2% z = -2.1

Shares are out of the decks that can play the card. A change shows when it's clear: 10+ decks on one side and |z| ≥ 3, odds under 1 in 300 by chance. Cards first printed in Reality Fracture are under New cards by set.

Deck shape by window

Per deck, except the deck count and shares

Each builder counts once per commander and set window, with their latest list. A deck counts in the window of its last edit.