Let me gather all the data I need in parallel — starting with the archetype overview, format meta, and card searches simultaneously.
Good. Now I have the card IDs and archetype data. Let me now:
The mono-white search returned Pauper, and Izzet Midrange returned Legacy — I need to search more specifically. Let me also fix the database query and look up the correct archetypes in Standard.
Zero entries for the Bant splash variant — the card IDs may differ. Let me verify which card IDs are actually appearing in Simic Cub mainboards, and check which mono-white deck runs 4x Momo. I'll also check the izzet midrange trends.
The query_database calls are failing due to comment syntax. Let me rewrite them without SQL comments and also look up the Izzet Midrange Standard archetype and Momo query.
Interesting — Brightglass Gearhulk and Seam Rip have zero presence in Simic Cub mainboards. And Momo is primarily in Boros Dragons (294 entries, 4x average), not a mono-white deck. Let me now verify this by checking the archetype cards and also look deeper at what archetype contains Momo + is closest to the "new mono-white with Momo" description, and get the proper Standard Izzet Midrange winrate.
Now I have good clarity. Brightglass Gearhulk and Seam Rip don't appear in Simic Cub mainboards at all — this is a pure GU deck. And Momo is a key card in Boros Dragons, not a mono-white deck. Let me now get the matchups for Simic Cub vs Boros Dragons and Simic Cub vs Izzet Midrange, and also check overall Simic Cub winrate for context.
Now let me get the top-20 matchup winrates for Simic Cub vs all the top archetypes, and pull sources.
The match result filtering issue (wins/losses showing 0) is because the result field uses different values. Let me check the correct result encoding and use the dedicated matchup tools instead.
Now I have all the data I need. Let me compile the full response.
Before diving in: there are zero tournament entries of Simic Cub running Brightglass Gearhulk + Seam Rip in the mainboard over the past month. The archetype is registered as a pure GU (Simic) shell across all 522 entries — no white splash variants have been recorded in competition. All matchup data below reflects standard Simic Cub as it's actually being played.
The deck is a pure GU ramp shell: Llanowar Elves → Badgermole Cub → Craterhoof Behemoth, with Nature's Rhythm, Gene Pollinator, and Spider Manifestation as core pieces. No white mana sources, no Brightglass Gearhulk, no Seam Rip.
| Opponent | WR | Matches | Favored? |
|---|---|---|---|
| Landfall | 64.2% | 386 | ✅ Favored |
| Dimir Midrange | 54.9% | 176 | ✅ Slight Edge |
| Reanimator | 55.9% | 34 | ✅ Slight Edge |
| Temur Harmonizer | 60.0% | 40 | ✅ Favored |
| Izzet Portal | 64.7% | 34 | ✅ Favored |
| Azorius Control | 61.3% | 31 | ✅ Favored |
| Dimir Control | 54.6% | 22 | ✅ Slight Edge |
| Izzet Lessons | 49.3% | 365 | ➖ Even |
| Mono Red Aggro | 46.3% | 82 | ❌ Slight Dog |
| Jeskai Control | 44.0% | 100 | ❌ Slight Dog |
| Dimir Excruciator | 46.1% | 191 | ❌ Slight Dog |
| Azorius Midrange | 42.2% | 147 | ❌ Dog |
| Temur Elementals | 38.9% | 36 | ❌ Dog |
| Izzet Elementals | 36.8% | 38 | ❌ Dog |
| Izzet Midrange | 39.9% | 148 | ❌ Dog |
| Boros Dragons | 32.2% | 87 | ❌ Hard Dog |
| Bant Airbending Combo | 27.6% | 58 | ❌ Very Hard Dog |
| Izzet Spellementals | 19.7% | 132 | ❌ Severe Dog |
Momo, Friendly Flier is indeed a 4-of staple, but in Boros Dragons — not a mono-white deck. The archetype pairs it with Clarion Conqueror, Magmatic Hellkite, Nova Hellkite, and Sarkhan, Dragon Ascendant.
Simic Cub vs. Boros Dragons: 32.2% WR (28W–59L, 87 matches)
This is a very bad matchup. The Dragon fliers simply go over the top of Simic Cub's ground creature plan.
Simic Cub vs. Izzet Midrange: 39.9% WR (59W–89L, 148 matches)
Izzet Midrange is genuinely trending — it spiked to 23.8% presence in the Mar 2–8 window and boasts a 56.9% overall WR in the past month. The matchup is a meaningful loss for Simic Cub. The Izzet deck's interaction suite and tempo plays line up well against the slow ramp plan.
Sources — Data from 87 Standard tournaments (65.5% Melee, 34.5% MTGO):