Live Play Data

Mnemonic Betrayal

· Sorcery · Guilds of Ravnica (GRN)

Live Inclusion

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Times Brought

279

Decks Running

112

Median Cast Turn

Drawn → Played

34%

Format

Multiplayer 1v1

First-cast turn

n=21

10%

19%

43%

T6-9

24%

T10+

Median 7 P25 4 · P75 9 · max 14

On curve 14% (2 / 21 cast on T3)

The "good card" funnel

279 brought · 131 players

Brought to game

279

Ever drawn

Reached battlefield

Still on board at game end

≥ +8.7pp

Players who cast this card win 51% of the time (n=20) , vs 21% when it never left the library (n=146).

When players drew this card but left it in hand, they won 18% (n=35).

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 +30.7pp; 95% confidence interval +8.7pp to +52.7pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

82 instances

3.7%

Library

6.1%

Battlefield

26.8%

Graveyard

37.8%

Exile

Commanders that played this card

in tracked games

1 Kefka, Court Mage // Kefka, Ruler of Ruin 15 decks
2 Tymna the Weaver 14 decks
3 Rograkh, Son of Rohgahh 10 decks
4 Y'shtola, Night's Blessed 9 decks
5 Kraum, Ludevic's Opus 8 decks
6 Umbris, Fear Manifest 7 decks
7 Don Andres, the Renegade 5 decks
8 Glarb, Calamity's Augur 5 decks
9 Tasha, the Witch Queen 5 decks
10 Homer, the Hermit 4 decks

Card text

Mnemonic Betrayal

Sorcery

Exile all opponents' graveyards. You may cast spells from among those cards this turn, and mana of any type can be spent to cast them. At the beginning of the next end step, if any of those cards remain exiled, return them to their owners' graveyards. Exile Mnemonic Betrayal.

Guilds of Ravnica (GRN) · Mythic · Illustrated by Clint Cearley

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 700,000+ Commander games overall, and this card-level play data comes from the Playgroup Live subset of that corpus.