Mossfire Valley
13% of tracked Gruul-identity decks on Playgroup Live run Mossfire Valley, with 79% of drawn copies reaching the battlefield and a median first-cast turn of 5.
Mossfire Valley slots into any Red-Green deck as a cost-efficient dual land, and the Playgroup Live dataset backs up its reputation as a reliable includes. 13% of tracked decks carry it, spread across 409 distinct lists out of 3125 in the dataset.
When a copy reaches a player's hand, 79% of those instances are played before the game ends. Median first activation lands on turn 5, which is later than you might expect for a land, reflecting that the {1} activation cost means players sometimes prioritize untapped sources early and deploy Mossfire Valley when fixing is needed in the mid-game. Once it hits the battlefield, it sticks: 88% of cast copies remain in play at game's end.
The data is well-spread: 374 distinct players have brought this card to tracked games, and no single player accounts for more than a small fraction of the sample. That breadth adds confidence that what we see reflects real format behavior rather than one prolific grinder's preferences.
- 13% of tracked decks include Mossfire Valley
- 79% of drawn copies are played before the game ends
- T5 median first-activation turn
- 88% battlefield stickiness once the land enters play
- 374 distinct players have brought this card to a tracked game
First-cast turn
n=155The "good card" funnel
788 brought · 374 playersOf 788 Mossfire Valley copies brought to games, 197 were drawn, 155 of those were played, and the large majority remained on the battlefield through the end of the game.
Players who cast this card win 24% of the time (n=145) , vs 21% when it never left the library (n=508).
When players drew this card but left it in hand, they won 36% (n=36) — about the same as leaving it in the library. Those players survived long enough to draw it, so the gap above is about the card resolving, not just about surviving.
Observed gap +3.1pp; 95% confidence interval -3.9pp to +10.2pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.
Final zone distribution
210 instancesMost Mossfire Valley copies finish on the battlefield or in the library. The library share is structural for a singleton in a 100-card deck. The high battlefield count reflects how reliably it sticks once played.
Commanders that played this card
in tracked games-
1
Cloud, Ex-SOLDIER
70 decks
-
2
Bello, Bard of the Brambles
50 decks
-
3
Ureni of the Unwritten
25 decks
-
4
Dogmeat, Ever Loyal
19 decks
-
5
Kibo, Uktabi Prince
16 decks
-
6
Chishiro, the Shattered Blade
9 decks
-
7
Wolverine, Best There Is
9 decks
-
8
Miirym, Sentinel Wyrm
8 decks
-
9
Tovolar, Dire Overlord // Tovolar, the Midnight Scourge
8 decks
-
10
Disa the Restless
6 decks
Cloud, Ex-SOLDIER and Bello, Bard of the Brambles lead the deck count, but Mossfire Valley appears across a wide range of Gruul-identity commanders, confirming it as a broad color-pair staple rather than a build-specific slot.