Live Play Data

Underground Sea

Land — Island Swamp · Vintage Masters (VMA)

13%

Live Inclusion

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Times Brought

2098

Decks Running

906

Median Cast Turn

3.0

Drawn → Played

89%

Format

Multiplayer 1v1

First-cast turn

n=688

25%

19%

13%

10%

20%

T6-9

T10+

Median 3.0 P25 1 · P75 5 · max 18

Cast same turn as drawn 61%

The "good card" funnel

2109 brought · 620 players

Brought to game

2109

Ever drawn

769

Reached battlefield

688

Still on board at game end

624

Once cast, 91% of this card is still on the battlefield at game end. This reflects how often it survives removal, not just whether it's a permanent.

≥ +1.7pp

Players who cast this card win 30% of the time (n=612) , vs 25% when it never left the library (n=1065).

When players drew this card but left it in hand, they won 24% (n=68).

Read this as correlation, not as the card's contribution. Casting a card means you lived long enough to cast it, so this gap widens with mana value across every card we track.

Observed gap +5.8pp; 95% confidence interval +1.7pp to +9.9pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

846 instances

4.3%

Library

73.8%

Battlefield

11.1%

Graveyard

5.1%

Exile

Commanders that played this card

in tracked games

1 The Ur-Dragon 51 decks
2 Y'shtola, Night's Blessed 40 decks
3 Esika, God of the Tree // The Prismatic Bridge 22 decks
4 Marneus Calgar 21 decks
5 Sauron, the Dark Lord 21 decks
6 Jin Sakai, Ghost of Tsushima 20 decks
7 Tymna the Weaver 18 decks
8 Oloro, Ageless Ascetic 17 decks
9 Teval, the Balanced Scale 17 decks
10 Atraxa, Praetors' Voice 16 decks

Card text

Underground Sea

Land — Island Swamp

(

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Vintage Masters (VMA) · Rare · Illustrated by Cliff Childs

Frequently Asked

Why isn't there more data on this card?

Playgroup Live collects per-card gameplay data from real Commander games. Play counts appear once a card reaches 100 tracked games, and the full charts need a sample of at least 25 observed games that is not dominated by a single pilot. Until this card clears those bars you're seeing only the basic counts. Stats refresh nightly.

How is Playgroup Live card data collected?

Players using Playgroup Live import their decklists before a game and log card actions as they play. Each cast, zone change, and resolution is recorded as a real game event. Stats on this site are computed from those events, not from decklist scrapes or theorycrafting. Playgroup has recorded 680,000+ Commander games overall, and this card-level play data comes from the Playgroup Live subset of that corpus.