Confidence:StrongSolidPlausibleTentativeSpeculative

• Esper Sentinel

  W

  Artifact Creature — Human SoldierW

  Both cards trigger when you cast a spell — they fire together.
• Agrus Kos, Spirit of Justice

  2RW

  Legendary Creature — Spirit DetectiveRW

  Scalding Viper bounces a permanent, enabling Agrus Kos, Spirit of Justice's recast / spell-cast trigger.
• Nicol Bolas, the Ravager // Nicol Bolas, the Arisen

  1UBR

  Legendary Creature — Elder Dragon // Legendary Planeswalker — BolasBRU

  Scalding Viper bounces a permanent, enabling Nicol Bolas, the Ravager's recast / spell-cast trigger.
• Phlage, Titan of Fire's Fury

  1RW

  Legendary Creature — Elder GiantRW

  Scalding Viper bounces a permanent, enabling Phlage, Titan of Fire's Fury's recast / spell-cast trigger.
• Voice of Resurgence

  GW

  Creature — ElementalGW

  Both cards trigger when you cast a spell — they fire together.
• Prosper, Tome-Bound

  2BR

  Legendary Creature — Tiefling WarlockBR

  Both cards trigger when you cast a spell — they fire together.
• Serene Sleuth

  1W

  Creature — Human DetectiveW

  Scalding Viper bounces a permanent, enabling Serene Sleuth's recast / spell-cast trigger.
• Bebop, Skull & Crossbones

  1B

  Legendary Creature — Boar MutantB

  Scalding Viper bounces a permanent, enabling Bebop, Skull & Crossbones's recast / spell-cast trigger.
• Voltaic Visionary // Volt-Charged Berserker

  1R

  Creature — Human Wizard // Creature — Human BerserkerR

  Both cards trigger when you cast a spell — they fire together.
• Bruse Tarl, Roving Rancher

  2RW

  Legendary Creature — Human WarriorRW

  Scalding Viper bounces a permanent, enabling Bruse Tarl, Roving Rancher's recast / spell-cast trigger.
• Headliner Scarlett

  3R

  Legendary Creature — Human WarlockR

  Scalding Viper bounces a permanent, enabling Headliner Scarlett's recast / spell-cast trigger.
• Speedball, New Warrior

  2U/R

  Legendary Creature — Human HeroRU

  Both cards trigger when you cast a spell — they fire together.
• Wildfire Devils

  3R

  Creature — DevilR

  Scalding Viper bounces a permanent, enabling Wildfire Devils's recast / spell-cast trigger.
• Talion, the Kindly Lord

  2UB

  Legendary Creature — Faerie NobleBU

  Both cards trigger when you cast a spell — they fire together.
• Chalice of the Void

  XX

  ArtifactC

  Both cards trigger when you cast a spell — they fire together.
• Mai, Scornful Striker

  1B

  Legendary Creature — Human Noble AllyB

  Both cards trigger when you cast a spell — they fire together.
• Undermountain Adventurer

  3G

  Creature — Giant WarriorG

  Scalding Viper bounces a permanent, enabling Undermountain Adventurer's recast / spell-cast trigger.
• Solitude

  3WW

  Creature — Elemental IncarnationW

  Scalding Viper bounces a permanent, enabling Solitude's recast / spell-cast trigger.
• Orcish Bowmasters

  1B

  Creature — Orc ArcherB

  Scalding Viper bounces a permanent, enabling Orcish Bowmasters's recast / spell-cast trigger.
• Thassa's Oracle

  UU

  Creature — Merfolk WizardU

  Scalding Viper bounces a permanent, enabling Thassa's Oracle's recast / spell-cast trigger.
• Regal Sliver

  3W

  Creature — SliverW

  Scalding Viper bounces a permanent, enabling Regal Sliver's recast / spell-cast trigger.
• Odric, Blood-Cursed

  1RW

  Legendary Creature — Vampire SoldierRW

  Scalding Viper bounces a permanent, enabling Odric, Blood-Cursed's recast / spell-cast trigger.
• Uro, Titan of Nature's Wrath

  1GU

  Legendary Creature — Elder GiantGU

  Scalding Viper bounces a permanent, enabling Uro, Titan of Nature's Wrath's recast / spell-cast trigger.
• Lightstall Inquisitor

  W

  Creature — Angel WizardW

  Scalding Viper bounces a permanent, enabling Lightstall Inquisitor's recast / spell-cast trigger.
• Omnath, Locus of Creation

  RGWU

  Legendary Creature — ElementalGRUW

  Scalding Viper bounces a permanent, enabling Omnath, Locus of Creation's recast / spell-cast trigger.