15 more formats
Confidence:StrongSolidPlausibleTentativeSpeculative
- SorceryB
Reanimate puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — Troll Warlock // SorceryB
Grave Researcher puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Legendary Creature — Human WizardBUW
Sefris of the Hidden Ways puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- EnchantmentB
Recurring Nightmare puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — Human WarlockBW
Priest of Fell Rites puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Enchantment — AuraB
Animate Dead puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- 1BSorceryB
Exhume puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Sorcery // SorceryBG
Life puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Enchantment — AuraB
Dance of the Dead puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- SorceryB
Victimize puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- 1BSorceryB
Persist puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- SorceryB
Soul Exchange puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Enchantment — SagaBW
Ascent of the Worthy puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- EnchantmentB
Necromancy puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Legendary Creature — Human NinjaBW
Karai, Future of the Foot puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- SorceryW
One Last Job puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Legendary Creature — Rat AvatarB
Rat King, Verminister puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Legendary Artifact — VehicleB
The Falcon, Airship Restored puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- InstantG
Reincarnation puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — Human ClericW
Pulsemage Advocate puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Legendary Creature — Cat Warrior // Legendary Planeswalker — AjaniRW
Ajani, Nacatl Pariah deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- EnchantmentR
Sarkhan's Unsealing deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Creature — Elder GiantRW
Phlage, Titan of Fire's Fury deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- EnchantmentR
Court of Embereth deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Human ShamanG
Master of the Wild Hunt deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
MTG Arena only
Synergies with cards played only on MTG Arena (including Arena rebalances). They aren't available in paper Magic.
Confidence:StrongSolidPlausibleTentativeSpeculative
- SorceryW
Honor the Past puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- 3RRCreature — DemonR
Chaos Balor deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Orc ArcherB
A-Orcish Bowmasters deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Planeswalker — TibaltR
Tibalt, Wicked Tormentor deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Artifact Creature — Ogre ShamanR
Bellowsbreath Ogre deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Planeswalker — Rowan // Legendary Planeswalker — WillRU
A-Rowan, Scholar of Sparks deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Creature — Human Elf ClericB
Shadowheart, Sharran Cleric deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Dragon // Sorcery — OmenGRU
Stonehide Ancient deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Enchantment — SagaR
Victory of the Pyrohammer deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Enchantment Creature — Lizard GlimmerBR
Gilded Ambusher deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Creature — Human ScoutGRW
Val, Marooned Surveyor deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Creature — WizardRU
A-Vivi Ornitier deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Goblin PilotR
Goblin Crash Pilot deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Enchantment — CaseR
Case of the Market Melee deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Human Wizard SorcererR
A-Rockslide Sorcerer deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Orc Sorcerer // SorceryR
Crescendo Conductor deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — DinosaurR
Chomping Mastasaur deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Creature — Horse MountR
Switchgrass Grazer deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- 2BRCreature — Human WarriorBR
A-Forge Boss deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Legendary Planeswalker — SorinB
A-Sorin, Imperious Bloodlord deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- SorceryB
A-Return Upon the Tide puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — Goblin ArtificerR
Concert Kaboomist deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- SorceryB
A-Graveyard Shift puts Fiendish Duo onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — Lizard ShamanR
A-Pyre-Sledge Arsonist deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
- Enchantment — ClassRU
A-Sorcerer Class deals damage, and Fiendish Duo makes each hit bigger — it doubles, triples or adds to the damage your sources deal.
Furnace of Rath1RRREnchantmentR
Curse of Bloodletting3RREnchantment — Aura CurseR
Artist's Talent1REnchantment — ClassR
Rem Karolus, Stalwart Slayer1RWLegendary Creature — Human KnightRW
Sulfuric Vapors3REnchantmentR
Absorbing Man and Titania3RGLegendary Creature — Human VillainGR
Embermaw Hellion3RRCreature — HellionR
Gisela, Blade of Goldnight4RWWLegendary Creature — AngelRW
Fire Servant3RRCreature — ElementalR
Twinflame Tyrant3RRCreature — DragonR
Angrath's Marauders5RRCreature — Human PirateR
Goblin Goliath4RRCreature — Goblin MutantR