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Cosmo Fling — Modern metagame & decklists | CastHaven
Modern archetype
Cosmo Fling
Meta share · 30d
0.2%
n=3,235 decks
Top 8s · 30d
1
finishes of 8th or better
Best finish
8th
Modern Challenge 64, May 30, 2026
Current top-performing list
Cosmo Fling — 8th place
Modern Challenge 64 · May 30, 2026 · Aldreen
via mtgo.com
Modern
Creatures · 13
4
Chancellor of the Tangle
4
Cosmogoyf
4
Devourer of Destiny
1
Aloe Alchemist
Spells · 20
4
Inquisition of Kozilek
4
Plunge into Darkness
4
Spoils of the Vault
4
Thud
3
Summoner's Pact
1
Fling
Artifacts · 4
4
Serum Powder
Lands · 23
4
Blackcleave Cliffs
4
Blooming Marsh
4
Copperline Gorge
4
Gemstone Caverns
4
Gemstone Mine
1
Blightstep Pathway // Searstep Pathway
1
Sideboard · 15
4
Veil of Summer
2
Leyline of Sanctity
2
Lightning Bolt
2
Pact of Negation
1
Aloe Alchemist
1
Boseiju, Who Endures
Core vs. flex
Staples
In ≥90% of lists (modal quantity shown) · mainboard · last 30 days · n=8 lists
Insufficient data (n=8)
We don’t show percentages below the sample threshold. Check back as more events report.
Data as of Jun 13, 2026 · MTGO + paper
casthaven.com
Past top performers
Date
Event
Finish
Player
Compare
May 30, 2026
Modern Challenge 64
8th
Aldreen
+
Add to compare
Modern Challenge 64
▼
May 30, 2026 · Aldreen
Finish
8th
+
Add to compare
Top 8 finishes · last 30 days · rows expand to the full copyable list.
Trends
Cosmo Fling adoption
% of classified Modern decks · weekly · n=33,079
View as table
Data as of Jun 13, 2026 · MTGO + paper
casthaven.com
Cavern of Souls
1
Swamp
1
Cavern of Souls
1
Forest
1
Leyline of the Void
Flex slots
Inclusion rate · mainboard · last 30 days · n=8 lists · top 12 of 20
Insufficient data (n=8)
We don’t show percentages below the sample threshold. Check back as more events report.
Data as of Jun 13, 2026 · MTGO + paper
casthaven.com
Rotated out
Blightstep Pathway // Searstep Pathway
last seen Jun 10, 2026 · in lists since Nov 30, 2025 · avg 1.3× per list
Chancellor of the Tangle
last seen Jun 10, 2026 · in lists since Nov 30, 2025 · avg 4× per list
Gemstone Caverns
last seen Jun 10, 2026 · in lists since Nov 30, 2025 · avg 3.8× per list
Lightning Bolt
last seen Jun 10, 2026 · in lists since Aug 30, 2025 · avg 3× per list
Fatal Push
last seen May 24, 2026 · in lists since Sep 27, 2025 · avg 3.3× per list
Darkbore Pathway // Slitherbore Pathway
last seen May 15, 2026 · in lists since Nov 30, 2025 · avg 1.2× per list
Thrun, the Last Troll
last seen May 11, 2026 · in lists since May 10, 2026 · avg 1× per list
Death's Shadow
last seen May 10, 2026 · in lists since Jan 2, 2026 · avg 1.3× per list
Cards this deck used to play, from the archetype’s full card-pool history — when they were last seen and how many copies lists ran.
0.2%
▲ 0.2 pts since Jun 9
Jun 9
Jun 8
Finish distribution
Final standings finishes · last 30 days · n=6 decks
View as table
1st
0
2nd
0
Top 4
0
Top 8
1
Other
5
Data as of Jun 13, 2026 · MTGO + paper
casthaven.com