Quick Answer

Fiendish Duo is a mythic Creature — Devil from GN2 (GN2) costing {4}{R}{R}. Legal in Commander.

Fiendish Duo MTG card

Fiendish Duo

Creature — Devil

Card Text

First strike (This creature deals combat damage before creatures without first strike.) If a source would deal damage to an opponent, it deals double that damage to that player instead.

Half the size, double the mayhem.

Card Stats

5/5 mythic CMC: 6.0 GN2 GN2 🎨 Lucas Graciano
First strike

Market Prices

TCGPlayer
$1.15
Foil
Buy
Card Kingdom
$2.49
Foil
Buy
Cardmarket
€8.09
Normal
Buy
Cardmarket
€2.96
Foil
Buy
Prices updated: 2025-12-04

Format Legality

Brawl Legal
Commander Legal
Duel Legal
Gladiator Legal
Historic Legal
Legacy Legal
Oathbreaker Legal
Timeless Legal
Vintage Legal

Similar Cards

Other Printings (4 total)

Community Stats

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Decks Using This Card
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Often Played With

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Frequently Asked Questions

What is Fiendish Duo? Basics

Fiendish Duo is a Creature — Devil card from the Magic: The Gathering trading card game.

Its ability reads: "First strike (This creature deals combat damage before creatures without first strike.) If a source would deal damage to an opponent, it deals double that damage to that player instead."

How much mana does Fiendish Duo cost to cast? Basics

Fiendish Duo has a mana cost of {4}{R}{R}, which equals 6.0 total mana (converted mana cost/mana value).

It requires R mana to cast.

What does mana cost mean in Magic: The Gathering? Basics

Mana cost is the amount and type of mana required to cast a spell in Magic: The Gathering.

Fiendish Duo's mana cost of {4}{R}{R} means you need to pay that much mana from your lands or other sources.

Colored symbols (W=White, U=Blue, B=Black, R=Red, G=Green) must be paid with that specific color, while numbers can be paid with any color.

What is converted mana cost (CMC) or mana value? Basics

Converted mana cost (now officially called "mana value") is the total amount of mana in a card's mana cost, regardless of color.

Fiendish Duo has a mana value of 6.0. This is important for effects that care about a spell's total cost, like cascade or cards that say "mana value 3 or less."

What is oracle text? Basics

Oracle text is the official, current rules text for a Magic card as maintained by Wizards of the Coast. It supersedes any printed text on older cards.

Fiendish Duo's current oracle text is: "First strike (This creature deals combat damage before creatures without first strike.) If a source would deal damage to an opponent, it deals double that damage to that player instead."

What is the current price of Fiendish Duo? Pricing

Price data for Fiendish Duo is currently unavailable. Check TCGPlayer or Card Kingdom for current prices.

Where can I buy Fiendish Duo? Pricing

You can purchase Fiendish Duo from major MTG retailers including:

Prices vary by condition and printing. Check multiple sellers to find the best price.

What is the difference between normal and foil cards? Pricing

Foil cards have a shiny, holographic finish that makes them more collectible. They are functionally identical to normal cards but typically cost more due to their rarity and visual appeal.

Is Fiendish Duo legal in Standard? Legality

Format legality information for Fiendish Duo in Standard is not available.

Standard is a rotating format that only allows cards from the most recent sets.

Is Fiendish Duo legal in Modern? Legality

Format legality information for Fiendish Duo in Modern is not available.

Modern includes all cards printed in a standard-legal set from 8th Edition forward.

Is Fiendish Duo legal in Commander (EDH)? Legality

Fiendish Duo is Legal in Commander (EDH) format.

Commander is a casual multiplayer format where you build a 100-card singleton deck around a legendary creature.

Is Fiendish Duo legal in Pioneer? Legality

Format legality information for Fiendish Duo in Pioneer is not available.

Pioneer is a non-rotating format that includes all standard-legal sets from Return to Ravnica forward.

Is Fiendish Duo legal in Legacy? Legality

Fiendish Duo is Legal in Legacy format.

Legacy allows almost all cards ever printed, with a substantial ban list for balance.

Is Fiendish Duo legal in Vintage? Legality

Fiendish Duo is Legal in Vintage format.

Vintage is the most permissive format, allowing almost all cards with only a minimal ban list. Some powerful cards are "Restricted" (limited to 1 copy).

Is Fiendish Duo legal in Pauper? Legality

Format legality information for Fiendish Duo in Pauper is not available.

Pauper only allows cards that have been printed at common rarity in a paper or online set.

What is format legality in MTG? Legality

Format legality indicates which official MTG formats allow a card to be played:

  • Legal: Card is allowed in the format
  • Banned: Card is prohibited from play
  • Restricted: Limited to 1 copy (Vintage only)
  • Not Legal: Card was never part of that format's card pool

Different formats have different banned lists based on power level and game balance.

What set is Fiendish Duo from? Details

This printing of Fiendish Duo is from GN2 (GN2), with collector number 4.

Fiendish Duo may also appear in other MTG sets with different art or special treatments.

What is Fiendish Duo's rarity? Details

Fiendish Duo is a mythic card in GN2.

Card rarity affects both availability and price. From rarest to most common: Mythic Rare → Rare → Uncommon → Common.

Who illustrated Fiendish Duo? Details

Fiendish Duo was illustrated by Lucas Graciano.

Magic: The Gathering features artwork from hundreds of talented artists, and many cards have been reprinted with new art over the years.

What is Fiendish Duo's power and toughness? Details

Fiendish Duo is a 5/5 creature.

Power (5) determines how much combat damage the creature deals. Toughness (5) determines how much damage it can take before being destroyed.

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