Confidence:StrongSolidPlausibleTentativeSpeculative

• Rescue Skiff

  5W

  Artifact — SpacecraftW

  One-directional refresh: one card can untap permanents the other wants to reuse. Not self-sustaining on its own — the untapper has to keep showing up.
• 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.
• Frost Fair Lure Fish

  5UR

  Creature — FishRU

  Both cards produce the same kind of effect (shared token subtype).
• Displacer Kitten

  3U

  Creature — Cat BeastU

  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.
• Brago, King Eternal

  2WU

  Legendary Creature — Spirit NobleUW

  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.
• Reef Worm

  3U

  Creature — WormU

  Both cards produce the same kind of effect (shared token subtype).
• Yuna, Hope of Spira

  3GW

  Legendary Creature — Human ClericGW

  Yuna, Hope of Spira returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Tameshi, Reality Architect

  2U

  Legendary Creature — Moonfolk WizardUW

  Tameshi, Reality Architect returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Phelia, Exuberant Shepherd

  1W

  Legendary Creature — DogW

  Phelia, Exuberant Shepherd blinks (exiles and returns) a permanent, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Elrond, Moon-Reader blinks (exiles and returns) a permanent, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Squall, SeeD Mercenary

  2WB

  Legendary Creature — Human Knight MercenaryBW

  Squall, SeeD Mercenary returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Nomad Mythmaker

  2W

  Creature — Human Nomad ClericW

  Nomad Mythmaker returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Venser, the Sojourner

  3WU

  Legendary Planeswalker — VenserUW

  Venser, the Sojourner blinks (exiles and returns) a permanent, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Harnessed Snubhorn

  3W

  Creature — DinosaurW

  Harnessed Snubhorn returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Zareth San, the Trickster

  3UB

  Legendary Creature — Merfolk RogueBU

  Zareth San, the Trickster returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Starfield of Nyx

  4W

  EnchantmentW

  Starfield of Nyx returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Fisher's Talent

  2GU

  Enchantment — ClassGU

  Both cards produce the same kind of effect (shared token subtype).
• Gerrard's Hourglass Pendant

  1

  Legendary ArtifactC

  Gerrard's Hourglass Pendant returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Go-Shintai of Life's Origin

  3G

  Legendary Enchantment Creature — ShrineBGRUW

  Go-Shintai of Life's Origin returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Storm Herald

  2R

  Creature — Human ShamanR

  Storm Herald returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Eldrazi Confluence

  2CC

  InstantC

  Eldrazi Confluence blinks (exiles and returns) a permanent, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Expendable Lackey

  U

  Creature — Human CitizenU

  Both cards produce the same kind of effect (shared token subtype).
• Rise to Glory

  3WB

  SorceryBW

  Rise to Glory returns creatures from the graveyard to the battlefield, re-firing Sleep with the Fishes's enter-the-battlefield effect.
• Fountainport

  LandC

  Both cards produce the same kind of effect (shared token subtype).
• Reservoir Kraken

  2UU

  Creature — KrakenU

  Both cards produce the same kind of effect (shared token subtype).