Confidence:StrongSolidPlausibleTentativeSpeculative

• Mikey & Leo, Chaos & Order

  G/WG/W

  Legendary Creature — Mutant Ninja TurtleGW

  Viral Drake proliferates, growing the counters Mikey & Leo, Chaos & Order relies on.
• Hollowmurk Siege

  BG

  EnchantmentBG

  Viral Drake proliferates, growing the counters Hollowmurk Siege relies on.
• Terrasymbiosis

  2G

  EnchantmentG

  Viral Drake proliferates, growing the counters Terrasymbiosis relies on.
• Ant-Man, Colony Commander

  1GU

  Legendary Creature — Human Rogue HeroGU

  Viral Drake proliferates, growing the counters Ant-Man, Colony Commander relies on.
• Aragorn, Company Leader

  1GW

  Legendary Creature — Human RangerGW

  Viral Drake proliferates, growing the counters Aragorn, Company Leader relies on.
• Moss-Pit Skeleton

  BG

  Creature — Plant SkeletonBG

  Viral Drake proliferates, growing the counters Moss-Pit Skeleton relies on.
• Deadly Designs

  1B

  EnchantmentB

  Viral Drake proliferates, growing the counters Deadly Designs relies on.
• Pensive Professor

  1UU

  Creature — Human WizardU

  Viral Drake proliferates, growing the counters Pensive Professor relies on.
• Darksteel Reactor

  4

  ArtifactC

  Viral Drake proliferates, growing the counters Darksteel Reactor relies on.
• Captain Marvel, Apex Avenger

  5RW

  Legendary Creature — Human Kree HeroRW

  Viral Drake proliferates, growing the counters Captain Marvel, Apex Avenger relies on.
• Animation Module

  1

  ArtifactC

  Viral Drake proliferates, growing the counters Animation Module relies on.
• Cloaked Cadet

  4G

  Creature — Human RangerG

  Viral Drake proliferates, growing the counters Cloaked Cadet relies on.
• Force Bubble

  2WW

  EnchantmentW

  Viral Drake proliferates, growing the counters Force Bubble relies on.
• Innocuous Researcher

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps lands, fueling Viral Drake's mana-hungry effect.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps lands, fueling Viral Drake's mana-hungry effect.
• Time Spiral

  4UU

  SorceryU

  Time Spiral untaps lands, fueling Viral Drake's mana-hungry effect.
• Nissa, Vastwood Seer // Nissa, Sage Animist

  2G

  Legendary Creature — Elf Scout // Legendary Planeswalker — NissaG

  Nissa, Vastwood Seer untaps lands, fueling Viral Drake's mana-hungry effect.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Viral Drake has activated abilities that aren't mana abilities, fueling Elrond, Moon-Reader's activation-trigger.
• Nissa, Worldwaker

  3GG

  Legendary Planeswalker — NissaG

  Nissa, Worldwaker untaps lands, fueling Viral Drake's mana-hungry effect.
• Rewind

  2UU

  InstantU

  Rewind untaps lands, fueling Viral Drake's mana-hungry effect.
• Prophet of Kruphix

  3GU

  Creature — Human WizardGU

  Prophet of Kruphix untaps lands, fueling Viral Drake's mana-hungry effect.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed untaps lands, fueling Viral Drake's mana-hungry effect.
• Finale of Revelation

  XUU

  SorceryU

  Finale of Revelation untaps lands, fueling Viral Drake's mana-hungry effect.
• Zacama, Primal Calamity

  6RGW

  Legendary Creature — Elder DinosaurGRW

  Zacama, Primal Calamity untaps lands, fueling Viral Drake's mana-hungry effect.
• Sphinx of the Second Sun

  6UU

  Creature — SphinxU

  Sphinx of the Second Sun untaps lands, fueling Viral Drake's mana-hungry effect.