Rottenmouth Viper
Rottenmouth Viper Price Summary
As of Aug 6, 2026, the cheapest tracked printing of Rottenmouth Viper is $5.57 (BLB #107), and the most expensive is $23.38 (BLB #290, Borderless, Foil). The benchmark price (cheapest playable nonfoil) is $5.57, up 12.3% over 7 days, up 8.0% over 30 days, down 3.6% over 90 days. All-time tracked high: $11.78 (2024).
Rottenmouth Viper Printings & Prices
Rottenmouth Viper has 4 tracked printings across 2 sets, in nonfoil and foil finishes, including promo pack, prerelease and borderless treatments.
Sell Rottenmouth Viper: Buylist Offers
Card Kingdom currently pays $14.00 cash for PBLB #107p (Foil); the retail-buylist spread on that printing is 50% (wide).
| Buyer | Printing | Finish | Cash offer | Retail | Spread |
|---|---|---|---|---|---|
| Card Kingdom | PBLB #107p | Foil | $14.00 | $27.99 | 50% |
| CoolStuffInc | BLB #290 | Foil | $14.00 | — | — |
| Card Kingdom | BLB #290 | Foil | $12.00 | $29.99 | 60% |
| Card Kingdom | PBLB #107s | Foil | $7.75 | $16.99 | 54% |
| Card Kingdom | BLB #290 | Nonfoil | $6.00 | $11.99 | 50% |
| Card Kingdom | BLB #107 | Foil | $5.00 | $9.99 | 50% |
| Card Kingdom | PBLB #107p | Nonfoil | $2.90 | $9.49 | 69% |
| Card Kingdom | BLB #107 | Nonfoil | $1.90 | $7.49 | 75% |
Rottenmouth Viper Rules Text & Legality
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.
Rottenmouth Viper is legal in Standard, Pioneer, Modern, Legacy and Commander, and not legal in Pauper.
Rottenmouth Viper Rulings
- Jul 26, 2024 An opponent can always choose not to sacrifice a nonland permanent or discard a card (and therefore lose 4 life) even if they have cards in their hand or nonland permanents on the battlefield.
- Jul 26, 2024 If Rottenmouth Viper leaves the battlefield before its triggered ability resolves, use the number of blight counters that were on it as it last existed on the battlefield to determine how many times each opponent must make the listed choice.
- Jul 26, 2024 In a multiplayer game, each opponent in turn order makes all of their choices, then all of the actions occur simultaneously. Opponents will know what choices opponents earlier in turn order made, although cards chosen to be discarded this way won’t be revealed until they’re discarded at the end of the process.
- Jul 26, 2024 While resolving Rottenmouth Viper’s triggered ability, your opponent chooses a card to be discarded without revealing it, chooses a nonland permanent to be sacrificed, or chooses to do neither. Cards or permanents they’ve chosen previously during this process can’t be chosen again. Then that player repeats that process if it hasn’t yet been done once for each blight counter on Rottenmouth Viper. Finally, that player discards the chosen cards, sacrifices the chosen permanents, and loses 4 life the appropriate number of times.
Reprints & Reprint Risk
Rottenmouth Viper has been reprinted 7 times. The Bloomburrow reprint cut the price 18% in 30 days.
| Set | Date | Rarity | Treatment | Price before | Day 1 | 30 days | 90 days |
|---|---|---|---|---|---|---|---|
| BLB #107 | 2024-08-02 | Mythic | Standard | $5.53 | $6.56 | $10.57 | $7.14 |
| BLB #290 | 2024-08-02 | Mythic | Borderless | $8.96 | $10.04 | $12.97 | $10.73 |
| PBLB #107p | 2024-08-02 | Mythic | Promo Pack | — | $10.42 | $10.49 | $10.39 |
| PBLB #107s | 2024-08-02 | Mythic | Prerelease | — | $20.50 | $14.01 | $14.36 |
| PBLB #107p | 2024-08-02 | Mythic | Promo Pack | — | — | $23.01 | $21.92 |
| BLB #290 | 2024-08-02 | Mythic | Borderless | $21.32 | $15.32 | $17.55 | $14.48 |
| BLB #107 | 2024-08-02 | Mythic | Standard | $6.68 | $6.25 | $10.20 | $8.09 |
BLB #107 
PBLB #107p Rottenmouth Viper in Commander
Rottenmouth Viper is the #2,795 most-played card on EDHREC, up 19 places over the last 30 days.
Rottenmouth Viper FAQ
How much is Rottenmouth Viper worth?
Rottenmouth Viper is worth about $5.57 for its cheapest playable printing as of Aug 6, 2026. Prices range from $5.57 to $23.38 across 4 tracked printings.
Is Rottenmouth Viper legal in Commander?
Yes — Rottenmouth Viper is legal in Commander. It is also legal in Standard, Pioneer, Modern and Legacy.
Has Rottenmouth Viper been reprinted?
Yes — Rottenmouth Viper has been reprinted 7 times, with 4 printings tracked on The Index.
Why is Rottenmouth Viper expensive?
Rottenmouth Viper holds a $5.57 price because even with 7 reprints, demand keeps pace with supply.