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Geometer's Arthropod SOS 0191 · rare

Geometer's Arthropod · {G}{U} · Creature — Fractal Crab · Whenever you cast a spell with {X} in its mana cost, look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order. · Power / toughness: 1/4 · "Creatures that have survived blood-soaked millennia should not be underestimated." —Nev, dean of substance

Geometer's Arthropod · {G}{U} · Creature — Fractal Crab · Whenever you cast a spell with {X} in its mana cost, look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order. · Power / toughness: 1/4 · "Creatures that have survived blood-soaked millennia should not be underestimated." —Nev, dean of substance

Price
from $0.333 printings
Win rate
54.6% GIH 4,748 instances · Premier Draft
Apr 21–Jun 2, 2026 · 17Lands

Game-in-hand win rate, all deck colors. 2,592 wins in 4,748 card-in-hand instances.

4,568 distinct games · 1,675 distinct drafts · games recorded Apr 21–Jun 2, 2026.

17Lands file dated Jun 5, 2026 · 100-instance minimum · 17Lands public data ↗

Draft data

54.6%when drawn (GIH)

−0.8 pp vs 55.4% average · 4,748 instances

Premier Draft · Apr 21–Jun 2, 2026 · average from 582,914 games

#196 of 320 nonland cards by win rate · last seen around pick 4.7 on average (29,846 packs).

56 of 83 multicolor cards · 17 of 26 multicolor rare cards.

Taken at pick6.44,818 picks
Makes the deck39.0%4,818 picks with known usage
When played53.5%9,951.5 matchesBenched 53.6%
14,247.5 matches
When drawn54.6%4,748 instances

Pick and maindeck observations: Apr 21–Jun 2, 2026. Played/benched cells use matches when available; the drawn cell uses game instances.

○ Opening hand 55.0% · 1,870 instances
● Drawn later 54.3% · 2,878 instances

In hand 54.6% · 4,748 instances
Unseen in deck 53.4% · 5,625 instances
+1.2 percentage points when drawn

Compared with multicolor cards

Win rate when drawn54.6%4,748 instances56 of 83
Opening hand55.0%1,870 instances43 of 82
Drawn later54.3%2,878 instances67 of 83
In the deck54.0%10,547 instances52 of 83
Without seeing it53.4%5,625 instances33 of 83
Improvement when drawn+1.2 pp4,748 instances / 5,625 instances57 of 83
When benched53.6%14,247.5 matches78 of 83
Makes the deck39.0%4,818 picks with known usage71 of 83
Pick (last seen)4.729,846 packs53 of 83
Taken at6.44,818 picks52 of 83

Ranks require 100 observations for that metric; comparisons are descriptive, not a pick order. Pick ranks put earlier picks first.

Best decks for it

no-splash decks only · card-level in-hand rates · 100 minimum

Quandrix Incremental Value UG56.1%1,543 instances

Each tick is this card’s all-decks rate (54.6% · 4,748 instances). A high card rate does not prove that splashing it will improve your deck.

Best with

Adjusted associations, ranked by confidence.

Pterafractyl+6.2 pp6,407 games with both in the deck · 1,753 both drawn
How to read this

Observational, not a causal bonus. Both cards must be in the deck. Drawn means opening hand or normally drawn; each card counts once per game. Game-level approximate intervals do not account for repeated games by the same drafter.

At least 100 games in each of four drawn/not-drawn groups; adjusted for game length and screened by the lower confidence bound. Do not add these points to a card’s win rate.

Where it sits in the set

Above 39% of 320 nonland cards with 100+ instances, in win-rate order.

30% or lowerWin rate94% or higher

17Lands public datasets ↗ · CC BY 4.0 ↗ · Apr 21–Jun 2, 2026

Collect

3 printingsScryfall USD, snapshot Oct 25Pack odds →

Pick a printing for its prices and pull odds.

Prices

SOS 0191 · Regular printingListings ↗
FinishFound inPrice
NonfoilPlay Booster · prerelease-quandrix$0.33
FoilCollector Booster · Play Booster · prerelease-lorehold · prerelease-prismari · prerelease-quandrix · prerelease-silverquill · prerelease-witherbloom$0.34

Foil in a Collector Booster · Modeled · About 1 in 70 packs (1.43%) · 15.9% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a Play Booster · Modeled · About 1 in 928 packs (0.11%) · 3.2% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a Play Booster · Modeled · About 1 in 66 packs (1.50%) · 36.5% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a prerelease-lorehold · Modeled · About 1 in 70 packs (1.43%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a prerelease-prismari · Modeled · About 1 in 70 packs (1.43%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a prerelease-quandrix · Modeled · About 1 in 70 packs (1.43%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a prerelease-quandrix · Modeled · About 1 in 24 packs (4.08%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a prerelease-silverquill · Modeled · About 1 in 70 packs (1.43%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a prerelease-witherbloom · Modeled · About 1 in 70 packs (1.43%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

How to pull it

Official rates for the whole category, not this card.

BoosterSlotPer packCategory
Play BoosterWildcard of any rarity100%Wildcard of any rarity
Play BoosterRare or mythic rare100%Rare or mythic rare
Play BoosterTraditional foil of any rarity100%Traditional foil of any rarity
Collector BoosterTraditional foil rare or mythic85.7%Rare

Wizards · Collecting Secrets of Strixhaven ↗ · Oct 29, 2026

Details & sources

Legal in
Standard · Historic · Timeless · Pioneer · Modern · Legacy · Vintage · CommanderLimited eligibility depends on the event and its booster pool.
Illustration
Joe Slucher, SOS 191 · Scryfall ↗
More like this
Quandrix Incremental Value cards → · Regular printing printings →
Sources
Wizards · Collecting Secrets of Strixhaven · Oct 29, 2026
Scryfall USD, snapshot Oct 25
Comprehensive Rules ↗