Confidence:StrongSolidPlausibleTentativeSpeculative

• Professional Wrestler

  3G

  Creature — Human Warrior PerformerG

  Synergy between the two cards.
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Chandra, Flameshaper

  5RR

  Legendary Planeswalker — ChandraR

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Basri, Tomorrow's Champion

  W

  Legendary Creature — Human KnightW

  Basri, Tomorrow's Champion has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Unearth

  B

  SorceryB

  Unearth has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Flame Blitz

  R

  EnchantmentR

  Flame Blitz has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Jolted Awake

  W

  SorceryW

  Jolted Awake has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Decree of Annihilation

  8RR

  SorceryR

  Decree of Annihilation has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Vedalken Aethermage

  1U

  Creature — Vedalken WizardU

  Vedalken Aethermage has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Decree of Pain

  6BB

  SorceryB

  Decree of Pain has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Elvish Aberration

  5G

  Creature — Elf MutantG

  Elvish Aberration has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Nephalia Smuggler

  U

  Creature — Human RogueU

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Soulherder

  1WU

  Creature — SpiritUW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• The Mind Stone

  1W

  Legendary Artifact — Infinity StoneW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Mirrorhall Mimic // Ghastly Mimicry

  3U

  Creature — Spirit // Enchantment — AuraU

  One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).
• Neutralize

  1UU

  InstantU

  Neutralize has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Resounding Thunder

  2R

  InstantBGR

  Resounding Thunder has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Saheeli Rai

  1UR

  Legendary Planeswalker — SaheeliRU

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Boon of the Wish-Giver

  4UU

  SorceryU

  Boon of the Wish-Giver has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Spectacular Pileup

  3WW

  SorceryW

  Spectacular Pileup has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Webstrike Elite

  GG

  Creature — Insect ArcherG

  Webstrike Elite has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Intimidation Tactics

  B

  SorceryB

  Intimidation Tactics has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Lórien Revealed

  3UU

  SorceryU

  Lórien Revealed has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Dismissive Denial

  2UU

  InstantU

  Dismissive Denial has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.
• Borough Backup

  4W

  SorceryW

  Borough Backup has cycling, and Scarlet Spider, Kaine pays off whenever a card is cycled — the Astral Slide / Lightning Rift engine shape.