Live Play Data

Moonstone, Harsh Mistress

· Legendary Creature — Human Doctor Villain · Marvel Super Heroes (MSH)

Live Inclusion

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Times Brought

747

Decks Running

354

Median Cast Turn

Drawn → Played

45%

Format

Multiplayer 1v1

First-cast turn

n=87

10%

16%

47%

T6-9

17%

T10+

Median 7 P25 5 · P75 9 · max 16

On curve 20% (9 / 87 cast on T4) Cast same turn as drawn 26%

The "good card" funnel

747 brought · 322 players

Brought to game

747

Ever drawn

193

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.

≥ -0.8pp

Players who cast this card win 27% of the time (n=78) , vs 18% when it never left the library (n=432).

When players drew this card but left it in hand, they won 30% (n=92).

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 +8.6pp; 95% confidence interval -0.8pp to +18.0pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

212 instances

1.9%

Library

20.3%

Battlefield

45.8%

Graveyard

9.4%

Exile

Commanders that played this card

in tracked games

1 Doctor Doom, King of Latveria 292 decks
2 Loki, the Deceiver 14 decks
3 Kang, Temporal Tyrant 5 decks
4 Thanos, the Mad Titan 5 decks
5 Ultron, Unlimited 5 decks
6 Doctor Octopus, Master Planner 4 decks
7 Azula, Ruthless Firebender 2 decks
8 Kefka, Court Mage // Kefka, Ruler of Ruin 2 decks
9 Norman Osborn // Green Goblin 2 decks
10 Ares, God of War 1 decks

Card text

Moonstone, Harsh Mistress

Legendary Creature — Human Doctor Villain

Flying Whenever you discard a card, you may exile that card from your graveyard. If you do, until the end of your next turn, you may play that card.

2 / 4

Marvel Super Heroes (MSH) · Uncommon · Illustrated by Grace Zhu

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 770,000+ Commander games overall, and this card-level play data comes from the Playgroup Live seats playing virtual cards, a subset of that corpus.