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Coin of Mastery

· Artifact · Teenage Mutant Ninja Turtles Eternal (TMC)

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Times Brought

506

Decks Running

270

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

Coin of Mastery

Artifact

Each creature you control enters with an additional +1/+1 counter on it for each mana from an artifact source spent to cast it. {T}

: Create a Treasure token. (It's an artifact with " {T}

, Sacrifice this token: Add one mana of any color.")

Teenage Mutant Ninja Turtles Eternal (TMC) · Rare · Illustrated by Madeline Boni

Final zone distribution

99 instances

2.0%

Library

50.5%

Battlefield

8.1%

Graveyard

5.1%

Exile

Commanders that played this card

in tracked games

The "good card" funnel

507 brought · 250 players

Brought to game

507

Ever drawn

Reached battlefield

Still on board at game end

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.

≥ -6.7pp

Players who cast this card win 28% of the time (n=40) , vs 26% when it never left the library (n=296).

When players drew this card but left it in hand, they won 23% (n=22).

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 +1.7pp; 95% confidence interval -6.7pp to +10.0pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=55

16%

27%

40%

T6-9

T10+

Median 5 P25 4 · P75 7 · max 13

On curve 25% (9 / 55 cast on T4) Cast same turn as drawn 23%

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.