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Professor Onyx card art
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Professor Onyx

{4} {B} {B} · Legendary Planeswalker — Liliana · Duskmourn: House of Horror Commander (DSC)
Times Brought
146
Decks Running
65
In Decks
Decklist Inclusion
Format

Showing 1v1 (duel) data only. 1v1 is a different format from multiplayer Commander, so these numbers are not comparable.

Card text
Professor Onyx card

Professor Onyx

{4} {B} {B}
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

37 instances
2.7%
Library
32.4%
Battlefield
10.8%
Graveyard
10.8%
Exile

The "good card" funnel

146 brought · 63 players
Brought to game
146
Ever drawn
35
Reached battlefield
16
Still on board at game end
12
16 of 100 times cast 16%

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.