Confidence:StrongSolidPlausibleTentativeSpeculative

• Merrow Commerce

  1U

  Kindred Enchantment — MerfolkU

  Merrow Commerce untaps all (or many) permanents, refreshing Drowner of Secrets's tap activation.
• Deepway Navigator

  WU

  Creature — Merfolk WizardUW

  Deepway Navigator untaps all (or many) permanents, refreshing Drowner of Secrets's tap activation.
• Elrond, Moon-Reader

  2U

  Legendary Creature — Elf NobleU

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

  3

  ArtifactC

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

  2

  Artifact — EquipmentC

  Drowner of Secrets has activated abilities that aren't mana abilities, fueling Illusionist's Bracers's activation-trigger.