Cosmogoyf

Cosmogoyf Modern decklist played by Matheusreis at Mont Weekly Modern (26 Aug 2026).

Player: Matheusreis
Finish: #10 of 13, 1-3
Event: Mont Weekly Modern, 26 Aug 2026
Archetype: Cosmogoyf
Format: Modern
MTGO
Paper
Source: Melee.gg

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Main deck (60)

Creatures (11)

Instants (14)

Sorceries (8)

Artifacts (4)

Lands (23)

Sideboard (15)

Main deck (60)

Creatures (11)

Instants (14)

Sorceries (8)

4 Inquisition of Kozilek
4 Thud

Artifacts (4)

4 Serum Powder

Lands (23)

3 Blackcleave Cliffs
1 Blightstep Pathway // Searstep Pathway
3 Blooming Marsh
1 Boseiju, Who Endures
2 Cavern of Souls
3 Copperline Gorge
1 Darkbore Pathway // Slitherbore Pathway
4 Gemstone Caverns
4 Gemstone Mine
1 Swamp

Sideboard (15)

Compared with the average Cosmogoyf list

Average of 6 decks in the 7 days up to Aug. 26, 2026, the day of this tournament.

Main deck

More than usual

+2 Devourer of Destiny (4 vs 2.0)
+2 Gemstone Caverns (4 vs 2.0)
+2 Gemstone Mine (4 vs 2.0)
+2 Pact of Negation (3 vs 1.0)
+2 Spoils of the Vault (4 vs 2.0)
+2 Thud (4 vs 2.0)
+2 Copperline Gorge (3 vs 1.5)
+1 Blackcleave Cliffs (3 vs 1.8)

Fewer than usual

-3 Swamp (1 vs 4.2)
-2 Darkbore Pathway (0 vs 2.3)
-2 Necrodominance (0 vs 2.0)
-2 Soul Spike (0 vs 2.0)
-2 Twilight Mire (0 vs 2.0)
-2 Requiting Hex (0 vs 1.8)
-2 Rite of Consumption (0 vs 1.5)
-1 Force of Despair (0 vs 1.3)

Sideboard

More than usual

+3 Not of This World (4 vs 1.2)
+1 Sorin, Imperious Bloodlord (2 vs 0.7)
+1 Veil of Summer (4 vs 2.7)
+1 Natural State (2 vs 1.0)

Fewer than usual

-2 Grafdigger's Cage (0 vs 1.7)
-1 Break the Ice (0 vs 1.0)
-1 Professor Dellian Fel (0 vs 1.0)

Most unusual list in this period: Anonieme_Max in Modern Challenge 64 (20 cards away from the average)