Confidence:StrongSolidPlausibleTentativeSpeculative

• Kiora, the Tide's Fury

  3U

  Legendary Planeswalker — KioraU

  Untap loop: each side can untap what the other taps — a genuine mutual refresh engine.
• Starscape Cleric

  1B

  Creature — Bat ClericB

  Lifegain pair: one card gains life while the other rewards lifegain. They reinforce each other in a lifegain deck.
• Ajani Resolute

  1W

  Legendary Planeswalker — AjaniW

  Lifegain pair: one card gains life while the other rewards lifegain. They reinforce each other in a lifegain deck.
• Najeela, the Blade-Blossom

  2R

  Legendary Creature — Human WarriorBGRUW

  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.
• Dawn of Hope

  1W

  EnchantmentW

  Lifegain pair: one card gains life while the other rewards lifegain. They reinforce each other in a lifegain deck.
• Rodolf Duskbringer

  5B

  Legendary Creature — Vampire AngelBW

  Lifegain pair: one card gains life while the other rewards lifegain. They reinforce each other in a lifegain deck.
• Fiendish Panda

  2WB

  Creature — Bear DemonBW

  Lifegain pair: one card gains life while the other rewards lifegain. They reinforce each other in a lifegain deck.
• Undead Sprinter

  BR

  Creature — ZombieBR

  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.
• Timeline Culler

  BB

  Creature — Drix WarlockB

  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.
• Jace, Ingenious Mind-Mage

  4UU

  Legendary Planeswalker — JaceU

  Jace, Ingenious Mind-Mage untaps all (or many) permanents, refreshing Ayara, Widow of the Realm's tap activation.
• Aggravated Assault

  2R

  EnchantmentR

  Aggravated Assault untaps all (or many) permanents, refreshing Ayara, Widow of the Realm's tap activation.
• Tenacious Underdog

  1B

  Creature — Human WarriorB

  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.
• Angrath, the Flame-Chained

  3BR

  Legendary Planeswalker — AngrathBR

  Angrath, the Flame-Chained temporarily takes control of an opponent's creature, and Ayara, Widow of the Realm sacrifices it — the opponent loses the permanent for good.
• Veteran Beastrider

  1GW

  Creature — Human KnightGW

  Veteran Beastrider untaps all (or many) permanents, refreshing Ayara, Widow of the Realm's tap activation.
• Squee, the Immortal

  1RR

  Legendary Creature — GoblinR

  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.
• Oathsworn Vampire

  1B

  Creature — Vampire KnightB

  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.
• Intruder Alarm

  2U

  EnchantmentU

  Intruder Alarm untaps all (or many) permanents, refreshing Ayara, Widow of the Realm's tap activation.
• Claim the Firstborn

  R

  SorceryR

  Claim the Firstborn temporarily takes control of an opponent's creature, and Ayara, Widow of the Realm sacrifices it — the opponent loses the permanent for good.
• Loki, God of Lies

  1RR

  Legendary Creature — God Sorcerer VillainR

  Loki, God of Lies temporarily takes control of an opponent's creature, and Ayara, Widow of the Realm sacrifices it — the opponent loses the permanent for good.
• Dazzling Theater // Prop Room

  3W2W

  Enchantment — Room // Enchantment — RoomW

  Dazzling Theater untaps all (or many) permanents, refreshing Ayara, Widow of the Realm's tap activation.
• Kotis, Sibsig Champion

  BGU

  Legendary Creature — Zombie WarriorBGU

  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.
• Ebondeath, Dracolich

  2BB

  Legendary Creature — Zombie DragonB

  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.
• Gisa and Geralf

  2UB

  Legendary Creature — Human WizardBU

  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.
• Leonardo, Sewer Samurai

  3W

  Legendary Creature — Mutant Ninja Turtle SamuraiW

  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.
• Piper of the Swarm

  1B

  Creature — Human WarlockB

  Piper of the Swarm temporarily takes control of an opponent's creature, and Ayara, Widow of the Realm sacrifices it — the opponent loses the permanent for good.