Confidence:StrongSolidPlausibleTentativeSpeculative

• Earthcraft

  1G

  EnchantmentG

  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.
• Waylay

  2W

  InstantW

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

  3G

  Creature — Centaur DetectiveG

  Innocuous Researcher untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Fiery Gambit

  2R

  SorceryR

  Fiery Gambit untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Jorn, God of Winter // Kaldring, the Rimestaff

  2G1UB

  Legendary Snow Creature — God // Legendary Snow ArtifactBGU

  Jorn, God of Winter untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Dion, Bahamut's Dominant // Bahamut, Warden of Light

  3W

  Legendary Creature — Human Noble Knight // Legendary Enchantment Creature — Saga DragonW

  Both cards produce the same kind of effect (shared token subtype).
• Aryel, Knight of Windgrace

  2WB

  Legendary Creature — Human KnightBW

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

  3GU

  Creature — Human WizardGU

  Prophet of Kruphix untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Bumi, Unleashed

  3RG

  Legendary Creature — Human Noble AllyGR

  Bumi, Unleashed untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Zacama, Primal Calamity

  6RGW

  Legendary Creature — Elder DinosaurGRW

  Zacama, Primal Calamity untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Seedborn Muse

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Wilderness Reclamation

  3G

  EnchantmentG

  Wilderness Reclamation untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Sword of Feast and Famine

  3

  Artifact — EquipmentC

  Sword of Feast and Famine untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Beledros Witherbloom

  5BG

  Legendary Creature — Elder DragonBG

  Beledros Witherbloom untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Nature's Will

  2GG

  EnchantmentG

  Nature's Will untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Awakening

  2GG

  EnchantmentG

  Awakening untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Reset

  UU

  InstantU

  Reset untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Rude Awakening

  4G

  SorceryG

  Rude Awakening untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Bear Umbra

  2GG

  Enchantment — AuraG

  Bear Umbra untaps all (or many) permanents, refreshing Security Blockade's tap activation.
• Court of Embereth

  2RR

  EnchantmentR

  Both cards produce the same kind of effect (shared token subtype).
• Gideon's Phalanx

  5WW

  InstantW

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

  3R

  InstantR

  Radiating Lightning deals damage to many targets, fueling Security Blockade's damage-payoff trigger.
• Summon: Knights of Round

  6WW

  Enchantment Creature — Saga KnightW

  Both cards produce the same kind of effect (shared token subtype).
• Bruce Banner // The Incredible Hulk

  U2RRGG

  Legendary Creature — Human Scientist Hero // Legendary Creature — Gamma Berserker HeroGRU

  Bruce Banner grants an extra combat phase, enabling Security Blockade's combat-trigger payoff.
• Doom Foretold

  2WB

  EnchantmentBW

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