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Rottenmouth Viper BLB 0107 · mythic

Rottenmouth Viper · {5}{B} · 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. · Power / toughness: 6/6

Rottenmouth Viper · {5}{B} · 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. · Power / toughness: 6/6

Price
from $8.104 printings
Win rate
59.0% GIH 10,144 instances · Premier Draft
Jul 30–Sep 3, 2024 · 17Lands

Game-in-hand win rate, all deck colors. 5,982 wins in 10,144 card-in-hand instances.

9,957 distinct games · 3,707 distinct drafts · games recorded Jul 30–Sep 3, 2024.

17Lands file dated Sep 6, 2024 · 100-instance minimum · 17Lands public data ↗

Draft data

59.0%when drawn (GIH)

+4.4 pp vs 54.6% average · 10,144 instances

Premier Draft · Jul 30–Sep 3, 2024 · average from 931,230 games

#41 of 258 nonland cards by win rate · last seen around pick 1.4 on average (5,664 packs).

10 of 41 black cards · 3 of 4 black mythic cards.

Taken at pick1.44,291 picks
Makes the deck87.0%4,291 picks with known usage
When played55.4%20,449.7 matchesBenched 55.1%
1,849.3 matches
When drawn59.0%10,144 instances

Pick and maindeck observations: Jul 30–Sep 3, 2024. Played/benched cells use matches when available; the drawn cell uses game instances.

○ Opening hand 56.5% · 3,986 instances
● Drawn later 60.5% · 6,158 instances

In hand 59.0% · 10,144 instances
Unseen in deck 52.4% · 13,823 instances
+6.5 percentage points when drawn

Compared with black cards

Win rate when drawn59.0%10,144 instances10 of 41
Opening hand56.5%3,986 instances15 of 40
Drawn later60.5%6,158 instances8 of 41
In the deck55.3%23,985 instances20 of 41
Without seeing it52.4%13,823 instances32 of 41
Improvement when drawn+6.5 pp10,144 instances / 13,823 instances4 of 41
When benched55.1%1,849.3 matches12 of 42
Makes the deck87.0%4,291 picks with known usage1 of 42
Pick (last seen)1.45,664 packs2 of 42
Taken at1.44,291 picks2 of 42

Ranks require 100 observations for that metric; comparisons are descriptive, not a pick order. Pick ranks put earlier picks first.

Best decks for it

no-splash decks only · card-level in-hand rates · 100 minimum

Squirrelfolk BG61.3%1,871 instancesLizardfolk BR59.5%1,241 instancesBatfolk WB58.7%1,465 instancesRatfolk UB58.1%896 instances

Each tick is this card’s all-decks rate (59.0% · 10,144 instances). A high card rate does not prove that splashing it will improve your deck.

Usually played with

Deck co-occurrence; not evidence of synergy.

Savor10,699 games with both in the deckNocturnal Hunger10,149 games with both in the deckBonebind Orator9,775 games with both in the deck
How to read this

Observational, not a causal bonus. Both cards must be in the deck. Drawn means opening hand or normally drawn; each card counts once per game. Game-level approximate intervals do not account for repeated games by the same drafter.

At least 100 games in each of four drawn/not-drawn groups; adjusted for game length and screened by the lower confidence bound. Do not add these points to a card’s win rate.

Where it sits in the set

Above 84% of 258 nonland cards with 100+ instances, in win-rate order.

30% or lowerWin rate94% or higher

17Lands public datasets ↗ · CC BY 4.0 ↗ · Jul 30–Sep 3, 2024

Collect

4 printingsScryfall USD, snapshot Oct 25Pack odds →

Pick a printing for its prices and pull odds.

Prices

BLB 0107 · Regular printingListings ↗
FinishFound inPrice
NonfoilPlay Booster · Value Booster$8.10
FoilCollector Booster · Play Booster · Value Booster$10.13

Foil in a Collector Booster · Modeled · About 1 in 140 packs (0.71%) · 8.2% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a Play Booster · Modeled · About 1 in 2,100 packs (0.05%) · 1.7% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a Play Booster · Modeled · About 1 in 182 packs (0.55%) · 18.0% per display · MTGJSON model Oct 25, 2026 · How it’s modeled →

Foil in a value · Modeled · About 1 in 3,636 packs (0.03%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

Nonfoil in a value · Modeled · About 1 in 1,680 packs (0.06%) · MTGJSON model Oct 25, 2026 · How it’s modeled →

How to pull it

Official rates for the whole category, not this card.

BoosterSlotPer packCategory
Play BoosterWildcard of any rarity100%Wildcard of any rarity
Play BoosterRare or mythic rare100%Rare or mythic rare
Play BoosterTraditional foil of any rarity100%Traditional foil of any rarity
Collector BoosterTraditional foil rare or mythic14.4%Mythic rare

Wizards · Collecting Bloomburrow ↗ · Oct 29, 2026

Details & sources

Legal in
Standard · Historic · Timeless · Pioneer · Modern · Legacy · Vintage · CommanderLimited eligibility depends on the event and its booster pool.
Illustration
Andrea Piparo, BLB 107 · Scryfall ↗
More like this
Regular printing printings →
Sources
Wizards · Collecting Bloomburrow · Oct 29, 2026
Scryfall USD, snapshot Oct 25
Comprehensive Rules ↗