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Professor Onyx

· Legendary Planeswalker — Liliana · Duskmourn: House of Horror Commander (DSC)

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Times Brought

405

Decks Running

188

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

Professor Onyx

Legendary Planeswalker — Liliana

Magecraft — Whenever you cast or copy an instant or sorcery spell, each opponent loses 2 life and you gain 2 life. +1: You lose 1 life. Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard. −3: Each opponent sacrifices a creature with the greatest power among creatures that player controls. −8: Each opponent may discard a card. If they don't, they lose 3 life. Repeat this process six more times.

Loyalty 5

Duskmourn: House of Horror Commander (DSC) · Mythic · Illustrated by Kieran Yanner

Final zone distribution

99 instances

1.0%

Library

31.3%

Battlefield

19.2%

Graveyard

12.1%

Exile

Commanders that played this card

in tracked games

1 Winter, Cynical Opportunist 16 decks
2 K'rrik, Son of Yawgmoth 14 decks
3 Liliana, Heretical Healer // Liliana, Defiant Necromancer 10 decks
4 Tinybones, Bauble Burglar 10 decks
5 Fire Lord Azula 9 decks
6 Tergrid, God of Fright // Tergrid's Lantern 9 decks
7 Kuja, Genome Sorcerer // Trance Kuja, Fate Defied 7 decks
8 Y'shtola, Night's Blessed 7 decks
9 Gwenom, Remorseless 6 decks
10 Silverquill, the Disputant 6 decks

The "good card" funnel

405 brought · 174 players

Brought to game

405

Ever drawn

Reached battlefield

Still on board at game end

Once cast, 74% 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.

≥ -1.7pp

Players who cast this card win 29% of the time (n=34) , vs 21% when it never left the library (n=198).

When players drew this card but left it in hand, they won 21% (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 +7.3pp; 95% confidence interval -1.7pp to +16.3pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=42

12%

19%

64%

T6-9

T10+

Median 6.0 P25 5 · P75 8 · max 10

On curve 52% (8 / 42 cast on T6) Cast same turn as drawn 32%

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 760,000+ Commander games overall, and this card-level play data comes from the Playgroup Live seats playing virtual cards, a subset of that corpus.