Confidence:StrongSolidPlausibleTentativeSpeculative

• Breath of Fury

  2RR

  Enchantment — AuraR

  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.
• Season of Growth

  1G

  EnchantmentG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Mask of the Mimic

  U

  InstantU

  Simic Manipulator temporarily takes control of an opponent's creature, and Mask of the Mimic sacrifices it — the opponent loses the permanent for good.
• Spreading Plague

  4B

  EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Tinybones Joins Up

  B

  Legendary EnchantmentB

  Both cards trigger when a creature enters the battlefield — they fire together.
• Faramir, Steward of Gondor

  1WU

  Legendary Creature — Human NobleUW

  Both cards trigger when a creature enters the battlefield — they fire together.
• My Precious // Allure of Power

  31B

  Legendary Artifact — Equipment // Instant — AdventureB

  Simic Manipulator temporarily takes control of an opponent's creature, and My Precious sacrifices it — the opponent loses the permanent for good.
• Eye of Singularity

  3W

  World EnchantmentW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Court of Garenbrig

  1GG

  EnchantmentG

  Counter synergy: both cards work with the same kind of counters, so their effects stack in a counters deck. Not necessarily a closed loop on its own.
• Kethek, Crucible Goliath

  2BR

  Legendary Creature — Phyrexian BeastBR

  Simic Manipulator temporarily takes control of an opponent's creature, and Kethek, Crucible Goliath sacrifices it — the opponent loses the permanent for good.
• Garruk, Curse Breaker

  3GG

  Legendary Planeswalker — GarrukG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Kadena, Slinking Sorcerer

  1BGU

  Legendary Creature — Snake Wizard SorcererBGU

  Both cards trigger when a creature enters the battlefield — they fire together.
• Grist, Voracious Larva // Grist, the Plague Swarm

  G

  Legendary Creature — Insect // Legendary Planeswalker — GristBG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Copperhorn Scout

  G

  Creature — Elf ScoutG

  Copperhorn Scout untaps all (or many) permanents, refreshing Simic Manipulator's tap activation.
• Grimgrin, Corpse-Born

  3UB

  Legendary Creature — Zombie WarriorBU

  Simic Manipulator temporarily takes control of an opponent's creature, and Grimgrin, Corpse-Born sacrifices it — the opponent loses the permanent for good.
• Warden of the Grove

  2G

  Creature — HydraG

  Both cards trigger when a creature enters the battlefield — they fire together.
• Ultimate Nullification

  4W

  SorceryW

  Simic Manipulator temporarily takes control of an opponent's creature, and Ultimate Nullification sacrifices it — the opponent loses the permanent for good.
• Chief Magistrate of Mercadia

  4RW

  Legendary Creature — Human NobleRW

  Copy engine: one card makes copies of a creature — once a turn, or once for each time you pay its cost — and each copy pays off: the creature's enter-the-battlefield effect fires again, or the hasty copy uses its tap ability. Real, repeatable value — every copy has its turn or its price, so it never goes infinite on its own.
• Fiend Artisan

  B/GB/G

  Creature — NightmareBG

  Simic Manipulator temporarily takes control of an opponent's creature, and Fiend Artisan sacrifices it — the opponent loses the permanent for good.
• Louisoix's Sacrifice

  U

  InstantU

  Simic Manipulator temporarily takes control of an opponent's creature, and Louisoix's Sacrifice sacrifices it — the opponent loses the permanent for good.
• Zimone and Dina

  BGU

  Legendary Creature — Human DryadBGU

  Simic Manipulator temporarily takes control of an opponent's creature, and Zimone and Dina sacrifices it — the opponent loses the permanent for good.
• Momo, Friendly Flier

  W

  Legendary Creature — Lemur Bat AllyW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Fire Lord Zuko

  RWB

  Legendary Creature — Human Noble AllyBRW

  Both cards trigger when a creature enters the battlefield — they fire together.
• Garruk Relentless // Garruk, the Veil-Cursed

  3G

  Legendary Planeswalker — Garruk // Legendary Planeswalker — GarrukBG

  Simic Manipulator temporarily takes control of an opponent's creature, and Garruk Relentless sacrifices it — the opponent loses the permanent for good.
• Lagrella, the Magpie

  GWU

  Legendary Creature — Human SoldierGUW

  Both cards trigger when a creature enters the battlefield — they fire together.