Confidence:StrongSolidPlausibleTentativeSpeculative

• Balthier and Fran

  1RG

  Legendary Creature — Human RabbitGR

  Balthier and Fran grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Bruce Banner // The Incredible Hulk

  U2RRGG

  Legendary Creature — Human Scientist Hero // Legendary Creature — Gamma Berserker HeroGRU

  Bruce Banner grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Anzrag, the Quake-Mole

  2RG

  Legendary Creature — Mole GodGR

  Anzrag, the Quake-Mole grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Najeela, the Blade-Blossom

  2R

  Legendary Creature — Human WarriorBGRUW

  Najeela, the Blade-Blossom grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Tifa, Martial Artist

  1RGW

  Legendary Creature — Human MonkGRW

  Tifa, Martial Artist grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Finest Hour

  2GWU

  EnchantmentGUW

  Finest Hour grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Genji Glove

  5

  Artifact — EquipmentC

  Genji Glove grants an extra combat phase, enabling Marsh Viper's combat-trigger payoff.
• Sefris of the Hidden Ways

  WUB

  Legendary Creature — Human WizardBUW

  Sefris of the Hidden Ways puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Recurring Nightmare

  2B

  EnchantmentB

  Recurring Nightmare puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Priest of Fell Rites

  WB

  Creature — Human WarlockBW

  Priest of Fell Rites puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Animate Dead

  1B

  Enchantment — AuraB

  Animate Dead puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Exhume

  1B

  SorceryB

  Exhume puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Life // Death

  G1B

  Sorcery // SorceryBG

  Life puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Dance of the Dead

  1B

  Enchantment — AuraB

  Dance of the Dead puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Victimize

  2B

  SorceryB

  Victimize puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Persist

  1B

  SorceryB

  Persist puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Soul Exchange

  BB

  SorceryB

  Soul Exchange puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Ascent of the Worthy

  1WB

  Enchantment — SagaBW

  Ascent of the Worthy puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Necromancy

  2B

  EnchantmentB

  Necromancy puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Too Evil to Stay Dead

  2B

  SorceryB

  Too Evil to Stay Dead puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Vesperlark

  2W

  Creature — ElementalW

  Vesperlark puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Karai, Future of the Foot

  1WB

  Legendary Creature — Human NinjaBW

  Karai, Future of the Foot puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• One Last Job

  2W

  SorceryW

  One Last Job puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.
• Rat King, Verminister

  1B

  Legendary Creature — Rat AvatarB

  Rat King, Verminister puts Marsh Viper onto the battlefield from a graveyard without casting it, so its mana cost is never paid.