Live Play Data

Caves of Koilos

Land · Reality Fracture Commander (FRC)

29%

Live Inclusion

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Times Brought

5539

Decks Running

2624

Median Cast Turn

Drawn → Played

74%

Format

Multiplayer 1v1

First-cast turn

n=997

16%

15%

13%

12%

10%

28%

T6-9

T10+

Median 4 P25 2 · P75 6 · max 16

Cast same turn as drawn 50%

The "good card" funnel

5546 brought · 1910 players

Brought to game

5546

Ever drawn

1342

Reached battlefield

997

Still on board at game end

925

Once cast, 93% 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.

≥ +0.7pp

Players who cast this card win 29% of the time (n=900) , vs 25% when it never left the library (n=3460).

When players drew this card but left it in hand, they won 33% (n=315).

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 +3.7pp; 95% confidence interval +0.7pp to +6.8pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

1513 instances

2.8%

Library

61.1%

Battlefield

15.0%

Graveyard

5.3%

Exile

Commanders that played this card

in tracked games

1 Killian, Decisive Mentor 134 decks
2 Jace, Multiverse Architect 130 decks
3 Edgar Markov 123 decks
4 Y'shtola, Night's Blessed 90 decks
5 Ulalek, Fused Atrocity 70 decks
6 Kaalia of the Vast 65 decks
7 Teysa Karlov 61 decks
8 Queen Marchesa 58 decks
9 Betor, Ancestor's Voice 56 decks
10 Mr. House, President and CEO 56 decks

Card text

Caves of Koilos

Land

: Add

: Add

. This land deals 1 damage to you.

Reality Fracture Commander (FRC) · Rare · Illustrated by Julian Kok Joon Wen

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.