15 more formats
Confidence:StrongSolidPlausibleTentativeSpeculative
- Creature — Klingon AdvisorB
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- SorceryB
Reanimate puts Rottenmouth Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Creature — ZombieBR
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Creature — Troll Warlock // SorceryB
Grave Researcher puts Rottenmouth Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
- Enchantment Creature — PhoenixR
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Creature — Drix WarlockB
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Planeswalker — ChandraR
Copy engine: one card makes copies of a creature — once a turn, or once for each time you pay its cost — and each copy pays off: the creature's enter-the-battlefield effect fires again, or the hasty copy uses its tap ability. Real, repeatable value — every copy has its turn or its price, so it never goes infinite on its own.
- 5B/GB/GLegendary Creature — AvatarBG
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Creature — Human Detective // Instant — AdventureBW
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Creature — Human WarriorB
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Creature — Human God HeroUW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Creature — Zombie HorrorU
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Enchantment Creature — GodU
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Legendary Artifact — Infinity StoneW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Creature — Human Knight // Sorcery — AdventureBG
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Creature — Human WizardBU
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- 1WUCreature — SpiritUW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- 3W/UW/ULegendary Creature — Mutant Ninja TurtleUW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Creature — Human RogueU
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Creature — GoblinR
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Creature — Zombie WarriorB
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Legendary Creature — Zombie KnightB
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Creature — PhoenixBGRUW
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- Enchantment — Saga // Legendary Creature — AvatarW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Legendary Creature — Mutant Ninja Turtle SamuraiW
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
MTG Arena only
Synergies with cards played only on MTG Arena (including Arena rebalances). They aren't available in paper Magic.
Confidence:StrongSolidPlausibleTentativeSpeculative
- Legendary Creature — Bird MonkRUW
Blink engine: one card blinks creatures — once a turn, once a combat, or each time you pay — and the other's enter-the-battlefield effect fires again on every blink. Real, repeatable value — never infinite on its own.
- Legendary Creature — Insect AngelW
Recursion engine: one card can reanimate repeatedly (an activated ability, or a return that comes back once a turn), and the other is a creature worth bringing back again and again — or a creature you recast from your graveyard beside a sacrifice outlet that doesn't pay for the recast. Real, repeatable value — not an infinite loop on its own.
- EnchantmentG
Both cards trigger when a creature enters the battlefield — they fire together.
- Creature — Bat ClericB
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human NobleGRW
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human AssassinG
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human WarriorRW
Both cards trigger when a permanent attacks — they fire together.
- Creature — Frog DruidBG
Both cards trigger when a creature enters the battlefield — they fire together.
- Enchantment Creature — NightmareB
Fear of Ridicule creates token copies, feeding Rottenmouth Viper's ETB or copy payoff.
- Creature — InsectG
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Creature — Human ClericUW
Niambi, Beloved Protector returns creatures from the graveyard to the battlefield, re-firing Rottenmouth Viper's enter-the-battlefield effect.
- Creature — Elf DruidGRW
Both cards trigger when a creature enters the battlefield — they fire together.
- Creature — Cat HorrorB
Rottenmouth Viper is a sacrifice outlet, enabling A-Skyclave Shadowcat's death or sacrifice trigger.
- Artifact — Book EquipmentU
Both cards trigger when a permanent attacks — they fire together.
- Legendary Creature — Jellyfish AdvisorGUW
Both cards trigger when a permanent attacks — they fire together.
- Artifact Creature — Equipment PhoenixR
Forgeborn Phoenix returns creatures from the graveyard to the battlefield, re-firing Rottenmouth Viper's enter-the-battlefield effect.
- EnchantmentUW
Both cards trigger when a creature enters the battlefield — they fire together.
- Legendary Artifact — SpacecraftW
Candela, Aegis of Adagia bounces a permanent, enabling Rottenmouth Viper's recast / spell-cast trigger.
- Creature — Dragon // Sorcery — OmenGRU
Stonehide Ancient bounces a permanent, enabling Rottenmouth Viper's recast / spell-cast trigger.
- Legendary Creature — Human Elf RogueBU
Both cards trigger when a permanent attacks — they fire together.
- Enchantment — AuraU
Rottenmouth Viper is a sacrifice outlet, enabling A-Public Enemy's death or sacrifice trigger.
- Creature — Kithkin Warrior BardGW
Both cards trigger when a permanent attacks — they fire together.
- Creature — Vampire SoldierB
Legion Reconsecrator returns creatures from the graveyard to the battlefield, re-firing Rottenmouth Viper's enter-the-battlefield effect.
Shroudstomper3WWBBCreature — ElementalBW
Archon of Cruelty6BBCreature — ArchonB
Cryptic Serpent5UUCreature — SerpentU
Serpent of the Pass5UUCreature — SerpentU
Archfiend of Spite5BBCreature — DemonB
Grizzlegom, Hurloon Hero5RGLegendary Creature — Minotaur WarriorGR
Writhing Necromass6BCreature — Zombie GiantB
Magister Sphinx4WUBArtifact Creature — SphinxBUW
Bribe Taker5GCreature — Rhino WarriorG
Marshmist Titan6BCreature — GiantB
Brainstealer Dragon5BBCreature — Dragon HorrorB
Count Nefaria6BLegendary Creature — Human VillainB