Confidence:StrongSolidPlausibleTentativeSpeculative

• Faerie Mastermind

  1U

  Creature — Faerie RogueU

  The Stone Brain draws a large number of cards, enabling Faerie Mastermind's draw-payoff or weaponized-draw effect.
• The Unagi of Kyoshi Island

  3UU

  Legendary Creature — SerpentU

  The Stone Brain draws a large number of cards, enabling The Unagi of Kyoshi Island's draw-payoff or weaponized-draw effect.
• Ob Nixilis Reignited

  3BB

  Legendary Planeswalker — NixilisB

  The Stone Brain draws a large number of cards, enabling Ob Nixilis Reignited's draw-payoff or weaponized-draw effect.
• Notion Thief

  2UB

  Creature — Human RogueBU

  The Stone Brain draws a large number of cards, enabling Notion Thief's draw-payoff or weaponized-draw effect.
• Defacing Duskmage // Vandal's Edit

  WB1WB

  Creature — Dog Warlock // InstantBW

  The Stone Brain draws a large number of cards, enabling Defacing Duskmage's draw-payoff or weaponized-draw effect.
• The Council of Four

  3WU

  Legendary Creature — Human NobleUW

  The Stone Brain draws a large number of cards, enabling The Council of Four's draw-payoff or weaponized-draw effect.
• Tataru Taru

  1W

  Legendary Creature — Dwarf AdvisorW

  The Stone Brain draws a large number of cards, enabling Tataru Taru's draw-payoff or weaponized-draw effect.
• Kurkesh, Onakke Ancient

  2RR

  Legendary Creature — Ogre SpiritR

  The Stone Brain has activated abilities that aren't mana abilities, fueling Kurkesh, Onakke Ancient's activation-trigger.
• Rings of Brighthearth

  3

  ArtifactC

  The Stone Brain has activated abilities that aren't mana abilities, fueling Rings of Brighthearth's activation-trigger.