Confidence:StrongSolidPlausibleTentativeSpeculative

• Black Lotus

  0

  ArtifactC

  Black Lotus is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mana Crypt

  0

  ArtifactC

  Mana Crypt is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Emerald

  0

  ArtifactG

  Mox Emerald is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Jet

  0

  ArtifactB

  Mox Jet is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Pearl

  0

  ArtifactW

  Mox Pearl is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Ruby

  0

  ArtifactR

  Mox Ruby is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Sapphire

  0

  ArtifactU

  Mox Sapphire is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Baron Helmut Zemo

  BBB

  Legendary Creature — Human Noble VillainB

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Chandra, Flameshaper

  5RR

  Legendary Planeswalker — ChandraR

  Copy engine: one card makes a copy of a creature every turn, and the other's enter-the-battlefield effect rewards each copy. Real, repeatable value — the partner can't untap or re-enter the copier, so it never goes infinite.
• Lotus Petal

  0

  ArtifactC

  Lotus Petal is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Paradise Mantle

  0

  Artifact — EquipmentC

  Paradise Mantle is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Chalice of the Void

  XX

  ArtifactC

  Chalice of the Void is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Diamond

  0

  ArtifactC

  Mox Diamond is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Edea, Possessed Sorceress

  2UBR

  Legendary Creature — Human WarlockBRU

  Graveyard pair: one card brings creatures back from the graveyard repeatedly (or a creature that returns itself), and the other keeps feeding the loop — a recurring reanimator with a payoff, or a sacrifice outlet with a self-recurring creature.
• Mishra's Bauble

  0

  ArtifactC

  Mishra's Bauble is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Urza's Bauble

  0

  ArtifactC

  Urza's Bauble is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Rinoa, Angel Wing

  2W

  Legendary Creature — Human Rebel WarlockW

  Graveyard pair: one card brings creatures back from the graveyard repeatedly (or a creature that returns itself), and the other keeps feeding the loop — a recurring reanimator with a payoff, or a sacrifice outlet with a self-recurring creature.
• Chrome Mox

  0

  ArtifactC

  Chrome Mox is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Mox Amber

  0

  Legendary ArtifactC

  Mox Amber is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Lion's Eye Diamond

  0

  ArtifactC

  Lion's Eye Diamond is a free artifact, so Valkyrie Aerial Unit's affinity cost drops the moment it is on the battlefield.
• Avatar Kyoshi, Earthbender

  5GGG

  Legendary Creature — Human AvatarG

  Graveyard pair: one card brings creatures back from the graveyard repeatedly (or a creature that returns itself), and the other keeps feeding the loop — a recurring reanimator with a payoff, or a sacrifice outlet with a self-recurring creature.
• Nephalia Smuggler

  U

  Creature — Human RogueU

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Soulherder

  1WU

  Creature — SpiritUW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• The Mind Stone

  1W

  Legendary Artifact — Infinity StoneW

  Blink pair: one card can blink creatures repeatedly, and the other's ETB rewards every re-entry. Free-running only when the blink is free or refunded (Deadeye + Drake class); otherwise a repeatable value engine.
• Mirrorhall Mimic // Ghastly Mimicry

  3U

  Creature — Spirit // Enchantment — AuraU

  One-shot copy enabler: a card enters as a copy of another (Phantasmal Image, Body Double, Phyrexian Metamorph), firing the partner's substantive ETB once. Not a repeating chain — fires once on entry — but valuable when the partner's ETB is combo-grade (graveyard reanimator, mana doubler, etc.).