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Contagion Engine

· Artifact · Scars of Mirrodin (SOM)

Decklist Inclusion

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Times Brought

282

Decks Running

143

In Decks

1001

Decklist Inclusion

Format

Multiplayer 1v1

Card text

Contagion Engine

Artifact

When this artifact enters, put a -1/-1 counter on each creature target player controls. {4}

: Proliferate twice. (Choose any number of permanents and/or players, then give each another counter of each kind already there. Then do it again.)

Scars of Mirrodin (SOM) · Rare · Illustrated by Daarken

Final zone distribution

69 instances

4.3%

Library

29.0%

Battlefield

23.2%

Graveyard

5.8%

Exile

Commanders that played this card

in tracked games

1 Atraxa, Praetors' Voice 30 decks
2 Auntie Ool, Cursewretch 8 decks
3 Ixhel, Scion of Atraxa 5 decks
4 Toxrill, the Corrosive 5 decks
5 Hapatra, Vizier of Poisons 4 decks
6 Kilo, Apogee Mind 4 decks
7 Massacre Girl, Known Killer 4 decks
8 The Wise Mothman 4 decks
9 Ultron, Artificial Malevolence 4 decks
10 Fynn, the Fangbearer 3 decks

The "good card" funnel

282 brought · 134 players

Brought to game

282

Ever drawn

Reached battlefield

Still on board at game end

Once cast, 63% 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.

≥ -1.1pp

Players who cast this card win 30% of the time (n=32) , vs 15% when it never left the library (n=196).

When players drew this card but left it in hand, they won 15% (n=26) — about the same as leaving it in the library. Those players survived long enough to draw it, so the gap above is about the card resolving, not just about surviving.

Observed gap +14.2pp; 95% confidence interval -1.1pp to +29.5pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=32

16%

41%

T6-9

31%

T10+

Median 7.0 P25 5 · P75 11 · max 18

On curve 47% (6 / 32 cast on T6) Cast same turn as drawn 32%

32 of 100 times cast 32%

Full analysis unlocks as more games are tracked. Stats refresh nightly.

Frequently Asked

Why isn't there more data on this card?

Playgroup Live collects per-card gameplay data from real Commander games. Basic play counts appear once a card reaches 100 tracked games; the full deep-dive page needs a larger, more diverse sample (at least 300 tracked games played by 10 or more different pilots, with no single pilot over 40 percent of the copies). 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 660,000+ Commander games overall, and this card-level play data comes from the Playgroup Live subset of that corpus.