Confidence:StrongSolidPlausibleTentativeSpeculative

• Walking Ballista✓

  XX

  Artifact Creature — ConstructC

  Counter + damage loop: one card spends counters to deal damage while the other replaces them on a hit (Heliod + Walking Ballista class).
• Triskelion✓

  6

  Artifact Creature — ConstructC

  Counter + damage loop: one card spends counters to deal damage while the other replaces them on a hit (Heliod + Walking Ballista class).
• Marath, Will of the Wild

  RGW

  Legendary Creature — Elemental BeastGRW

  Counter + damage loop: one card spends counters to deal damage while the other replaces them on a hit (Heliod + Walking Ballista class).
• Monoskelion

  2

  Artifact Creature — ConstructC

  Counter + damage loop: one card spends counters to deal damage while the other replaces them on a hit (Heliod + Walking Ballista class).
• Chamber Sentry

  X

  Artifact Creature — ConstructBGRUW

  Counter + damage loop: one card spends counters to deal damage while the other replaces them on a hit (Heliod + Walking Ballista class).
• Fblthp, Impossibly Lost

  1U

  Legendary Creature — HomunculusU

  Both cards trigger on damage dealt — they fire together.
• Sygg, Wanderwine Wisdom // Sygg, Wanderbrine Shield

  1U

  Legendary Creature — Merfolk Wizard // Legendary Creature — Merfolk RogueUW

  Both cards trigger on damage dealt — they fire together.
• The Beast, Deathless Prince

  2BR

  Legendary Creature — DemonBR

  Both cards trigger on damage dealt — they fire together.
• Niko Aris

  XWUU

  Legendary Planeswalker — NikoUW

  Both cards trigger on damage dealt — they fire together.
• Cryoshatter

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• Sleep Magic

  U

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• The Aetherspark

  4

  Legendary Artifact Planeswalker — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Lost Jitte

  1

  Legendary Artifact — EquipmentC

  Both cards trigger on damage dealt — they fire together.
• Puppet Master, String Puller

  2R

  Legendary Creature — Human Artificer VillainR

  Both cards trigger on damage dealt — they fire together.
• Piru, the Volatile

  2RRWWBB

  Legendary Creature — Elder DragonBRW

  Piru, the Volatile deals damage to many targets, fueling Bellowing Aegisaur's damage-payoff trigger.
• Witch-king of Angmar

  3BB

  Legendary Creature — Wraith NobleB

  Both cards trigger on damage dealt — they fire together.
• Vraska the Unseen

  3BG

  Legendary Planeswalker — VraskaBG

  Both cards trigger on damage dealt — they fire together.
• Liliana's Talent

  BB

  Enchantment — AuraB

  Both cards trigger on damage dealt — they fire together.
• Starscream, Power Hungry // Starscream, Seeker Leader

  3B

  Legendary Artifact Creature — Robot // Legendary Artifact — VehicleB

  Both cards trigger on damage dealt — they fire together.
• Swooping Pteranodon

  3RW

  Creature — DinosaurRW

  Swooping Pteranodon produces broad damage that redirects through Bellowing Aegisaur into something useful.
• Sporogenic Infection

  1B

  Enchantment — AuraB

  Both cards trigger on damage dealt — they fire together.
• Frozen Solid

  1UU

  Enchantment — AuraU

  Both cards trigger on damage dealt — they fire together.
• Cracked Skull

  2B

  Enchantment — AuraB

  Both cards trigger on damage dealt — they fire together.
• Mangara's Equity

  1WW

  EnchantmentW

  Both cards trigger on damage dealt — they fire together.
• Sower of Discord

  4BB

  Creature — DemonB

  Both cards trigger on damage dealt — they fire together.