Confidence:StrongSolidPlausibleTentativeSpeculative

• Lita, Mechanical Engineer

  2W

  Legendary Artifact Creature — ArtificerW

  Lita, Mechanical Engineer untaps all (or many) permanents, refreshing Shimmer Dragon's tap activation.
• Unwinding Clock

  4

  ArtifactC

  Unwinding Clock untaps all (or many) permanents, refreshing Shimmer Dragon's tap activation.
• Thopter Fabricator

  2U

  Artifact — VehicleU

  Draw pair: both cards engage with card draw. With a damage-or-draw trigger between them they form a draw engine.
• Blinkmoth Infusion

  12UU

  InstantU

  Blinkmoth Infusion untaps all (or many) permanents, refreshing Shimmer Dragon's tap activation.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

  Shimmer Dragon has activated abilities that aren't mana abilities, fueling Elrond, Moon-Reader's activation-trigger.
• Rings of Brighthearth

  3

  ArtifactC

  Shimmer Dragon has activated abilities that aren't mana abilities, fueling Rings of Brighthearth's activation-trigger.
• Illusionist's Bracers

  2

  Artifact — EquipmentC

  Shimmer Dragon has activated abilities that aren't mana abilities, fueling Illusionist's Bracers's activation-trigger.