Live Play Data

Rottenmouth Viper

· Creature — Elemental Snake · Bloomburrow (BLB)

Live Inclusion

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Times Brought

269

Decks Running

133

Median Cast Turn

7.0

Drawn → Played

54%

Format

Multiplayer 1v1

First-cast turn

n=38

16%

63%

T6-9

13%

T10+

Median 7.0 P25 6 · P75 8 · max 13

On curve 45% (8 / 38 cast on T6) Cast same turn as drawn 24%

The "good card" funnel

269 brought · 127 players

Brought to game

269

Ever drawn

Reached battlefield

Still on board at game end

Once cast, 47% 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.

≥ +0.9pp

Players who cast this card win 40% of the time (n=34) , vs 23% when it never left the library (n=175).

When players drew this card but left it in hand, they won 18% (n=31).

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 +17.7pp; 95% confidence interval +0.9pp to +34.5pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

Final zone distribution

75 instances

1.3%

Library

24.0%

Battlefield

34.7%

Graveyard

4.0%

Exile

Commanders that played this card

in tracked games

Card text

Rottenmouth Viper

Creature — Elemental Snake

As an additional cost to cast this spell, you may sacrifice any number of nonland permanents. This spell costs {1}

less to cast for each permanent sacrificed this way. Whenever this creature enters or attacks, put a blight counter on it. Then for each blight counter on it, each opponent loses 4 life unless that player sacrifices a nonland permanent of their choice or discards a card.

6 / 6

Bloomburrow (BLB) · Mythic · Illustrated by Andrea Piparo

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 690,000+ Commander games overall, and this card-level play data comes from the Playgroup Live subset of that corpus.