bolt Game Changer on the MTG Commander Game Changers list
Biorhythm card art
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Biorhythm

{6} {G} {G} · Sorcery · Ninth Edition (9ED)
0%
Decklist Inclusion
Times Brought
154
Decks Running
58
In Decks
260
Decklist Inclusion
0%
Format
Card text
Biorhythm card

Biorhythm

{6} {G} {G}
Sorcery
Each player's life total becomes the number of creatures they control.
Ninth Edition (9ED) · Rare · Illustrated by Ron Spears

Final zone distribution

40 instances
10.0%
Library
25.0%
Battlefield
40.0%
Graveyard
2.5%
Exile

Commanders that played this card

in tracked games

The "good card" funnel

154 brought · 57 players
Brought to game
154
Ever drawn
36
Reached battlefield
24
Still on board at game end
10
≥ +13.6pp

Players who cast this card win 64% of the time (n=23) , vs 32% when it never left the library (n=99).

Observed gap +32.3pp; 95% confidence interval +13.6pp to +51.0pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=24
0%
T1
0%
T2
4%
T3
4%
T4
13%
T5
58%
T6-9
21%
T10+
Median 6.5 P25 6 · P75 9 · max 12
On curve 71% (2 / 24 cast on T8) Cast same turn as drawn 41%
24 of 100 times cast 24%

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.