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Fiendish Duo card art
Live Play Data

Fiendish Duo

{4} {R} {R} · Creature — Devil · Murders at Karlov Manor Commander (MKC)
1%
Live Inclusion
Buy on TCGplayer
Times Brought
400
Decks Running
200
Median Cast Turn
7.0
Drawn → Played
63%
Format
Multiplayer 1v1

First-cast turn

n=50
0%
T1
0%
T2
0%
T3
12%
T4
22%
T5
58%
T6-9
8%
T10+
Median 7.0 P25 5 · P75 8 · max 13
On curve 46% (6 / 50 cast on T6) Cast same turn as drawn 24%

The "good card" funnel

400 brought · 183 players
Brought to game
400
Ever drawn
80
Reached battlefield
50
Still on board at game end
24

Once cast, 48% 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.

≥ -2.4pp

Players who cast this card win 39% of the time (n=48) , vs 27% when it never left the library (n=276).

When players drew this card but left it in hand, they won 13% (n=29).

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 +11.8pp; 95% confidence interval -2.4pp to +26.1pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

91 instances
3.3%
Library
26.4%
Battlefield
33.0%
Graveyard
7.7%
Exile

Commanders that played this card

in tracked games
Card text
Fiendish Duo card

Fiendish Duo

{4} {R} {R}
Creature — Devil
First strike (This creature deals combat damage before creatures without first strike.) If a source would deal damage to an opponent, it deals double that damage to that player instead.
5 / 5
Murders at Karlov Manor Commander (MKC) · Mythic · Illustrated by Lucas Graciano

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 720,000+ Commander games overall, and this card-level play data comes from the Playgroup Live seats playing virtual cards, a subset of that corpus.