Underground Sea card art
Live Play Data

Underground Sea

Land — Island Swamp · Vintage Masters (VMA)
13%
Live Inclusion
Times Brought
3287
Decks Running
1328
Median Cast Turn
3.0
Drawn → Played
90%
Format

First-cast turn

n=1060
25%
T1
19%
T2
14%
T3
11%
T4
9%
T5
20%
T6-9
3%
T10+
Median 3.0 P25 2 · P75 5 · max 18
Cast same turn as drawn 62%

The "good card" funnel

3300 brought · 887 players
Brought to game
3300
Ever drawn
1184
Reached battlefield
1060
Still on board at game end
972

Once cast, 92% 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.

≥ +1.9pp

Players who cast this card win 31% of the time (n=957) , vs 25% when it never left the library (n=1683).

When players drew this card but left it in hand, they won 25% (n=104).

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 +5.2pp; 95% confidence interval +1.9pp to +8.5pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

1304 instances
3.6%
Library
74.5%
Battlefield
10.7%
Graveyard
4.5%
Exile

Commanders that played this card

in tracked games
Card text
Underground Sea card

Underground Sea

Land — Island Swamp
({T}: Add {U} or {B}.)
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 710,000+ Commander games overall, and this card-level play data comes from the Playgroup Live seats playing virtual cards, a subset of that corpus.