The archetype overview resolved to Modern. Let me get the correct Pauper archetype and also look up the Utrom Monitor card_id in the database directly.
Good, I have the Pauper Grixis Affinity archetype ID. Now let me search for Utrom Monitor more broadly and also pull land/manabase data and winrate queries all at once.
Utrom Monitor doesn't appear to be in the database by that name. Let me check via Scryfall and also check for the "Universes Within" equivalent, while simultaneously pulling manabase and land data.
Utrom Monitor doesn't appear in the archetype card list or DB. The card likely exists under a "Universes Within" (OM1) equivalent name. Let me search for it and also pull land/manabase winrate splits simultaneously.
Now let me look for the Universes Within equivalent of Utrom Monitor (it's from the Spider-Man set SPM) and find what it's called in the OM1 set. Also let me build the manabase winrate splits.
Utrom Monitor is not in the database at all - it's not appearing in any Grixis Affinity lists. Now let me build the manabase winrate splits and also check MTGO sources specifically. Let me now do the manabase comparison analysis and check if Utrom Monitor might be a very new card not yet in the data.
Now I have all the manabase data. Let me classify the manabase configurations and compute winrates for each distinct archetype, and also check if Thought Monitor might be what the user means (it's a blue flying artifact with Affinity in Pauper).
Now let me check if Thought Monitor or Spire Monitor appears in Grixis Affinity lists, and also search for Utrom Monitor's oracle_id via Scryfall result to see if it has a twin in the DB. Let me check what the Universes Within name for Utrom Monitor is and also check Thought Monitor/Spire Monitor presence in MTGO Grixis Affinity.
Good, now I have MTGO data. Let me do the manabase winrate split just for MTGO entries and also check for Utrom Monitor's Universes Within twin.
Now let me get the sources and do a final check to see if Utrom Monitor is in any recent lists (it might be a newer card from a recent set not yet captured in tournament data, or it might simply not be played in Pauper Grixis Affinity at all).
I now have all the data needed. Here is the full analysis:
PAUPER GRIXIS AFFINITY: MANABASE WINRATE BREAKDOWN (Jan 4 - Mar 5, 2026)
Across 218 total entries from 106 tournaments (36% MTGO, 37% Melee, 27% Cardsrealm), three distinct manabase configurations emerge. Here are their winrates including a dedicated MTGO-only cut since that is the most controlled competitive environment:
ALL SOURCES (217 entries with complete land data):
MTGO ONLY (88 entries, leagues/challenges as requested):
The No Swamp / 4 Great Furnace configuration is the highest-performing manabase on MTGO by a meaningful margin, posting a 63.2% winrate versus 58.3% for the Standard build (a +4.9 point gap). The non-Standard and all-bridge approaches both fall below 50%, suggesting those builds are significantly weaker. The dominant core for the top two builds is: 4x Mistvault Bridge, 4x Drossforge Bridge, 2-3x Seat of the Synod, 3x Vault of Whispers, 2x Silverbluff Bridge -- differing only in whether they run 1 Swamp + 3 Great Furnace or 0 Swamp + 4 Great Furnace.
UTROM MONITOR:
Utrom Monitor does not appear anywhere in this database, not in any Grixis Affinity decklists nor in the cards table. This card is a Marvel Universes Beyond release from the Spider-Man set (SPM), and under the Universes Within policy it would have a paper/digital equivalent printed in Through the Omenpaths (OM1). That equivalent card does not appear to be captured in the current data under any name variation. As a result, a 0-4 copy winrate breakdown is not possible to compute. It is likely that Utrom Monitor either has not yet made its way into tracked tournament lists, or its Universes Within version has not been submitted to the sources this database collects from. Once lists featuring it begin appearing on MTGO or Melee, that breakdown will be trackable.
Sources: Data from 106 Pauper Grixis Affinity tournaments (Jan 4 - Mar 5, 2026), 36% MTGO, 37% Melee, 27% Cardsrealm.