Card Preview

Rottenmouth Viper

· Creature — Elemental Snake · Bloomburrow (BLB)

Decklist Inclusion

Buy on TCGplayer

Times Brought

183

Decks Running

In Decks

623

Decklist Inclusion

Format

Multiplayer 1v1

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

Final zone distribution

56 instances

23.2%

Battlefield

32.1%

Graveyard

3.6%

Exile

41.1%

Hand

Commanders that played this card

in tracked games

The "good card" funnel

183 brought · 89 players

Brought to game

183

Ever drawn

Reached battlefield

Still on board at game end

Once cast, 50% 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.

≥ -9.1pp

Players who cast this card win 32% of the time (n=22) , vs 21% when it never left the library (n=114).

When players drew this card but left it in hand, they won 18% (n=26) — about the same as leaving it in the library. Those players survived long enough to draw it, so the gap above is about the card resolving, not just about surviving.

Observed gap +10.5pp; 95% confidence interval -9.1pp to +30.2pp. Correlational, not causal: powerful payoffs also get cast more often in games you are already winning.

First-cast turn

n=26

19%

58%

T6-9

15%

T10+

Median 6.5 P25 5 · P75 8 · max 13

On curve 50% (6 / 26 cast on T6) Cast same turn as drawn 23%

26 of 100 times cast 26%

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.