Card Preview

Mass of Mysteries

· Legendary Creature — Elemental · Lorwyn Eclipsed Commander (ECC)

Buy on TCGplayer

Times Brought

307

Decks Running

159

In Decks

—

Decklist Inclusion

—

Format

Multiplayer 1v1

Showing 1v1 (duel) data only. 1v1 is a different format from multiplayer Commander, so these numbers are not comparable.

Card text

Mass of Mysteries

Legendary Creature — Elemental

First strike, vigilance, trample At the beginning of combat on your turn, another target Elemental you control gains myriad until end of turn. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

5 / 5

Lorwyn Eclipsed Commander (ECC) · Mythic · Illustrated by Jeff Miracola

Final zone distribution

69 instances

1.4%

Library

29.0%

Battlefield

24.6%

Graveyard

14.5%

Exile

Commanders that played this card

in tracked games

The "good card" funnel

308 brought · 152 players

Brought to game

308

Ever drawn

Reached battlefield

Still on board at game end

Once cast, 50% 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.

≥ -3.2pp

Players who cast this card win 31% of the time (n=28) , vs 25% when it never left the library (n=169).

When players drew this card but left it in hand, they won 19% (n=18).

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 +6.6pp; 95% confidence interval -3.2pp to +16.3pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=50

12%

58%

T6-9

T10+

Median 6.0 P25 4 · P75 7 · max 13

On curve 36% (4 / 50 cast on T5) Cast same turn as drawn 29%

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 730,000+ Commander games overall, and this card-level play data comes from the Playgroup Live seats playing virtual cards, a subset of that corpus.