Confidence:StrongSolidPlausibleTentativeSpeculative

• Beledros Witherbloom

  5BG

  Legendary Creature — Elder DragonBG

  Refuel loop: one card's payoff untaps your lands, paying for the other's activation again — repeatable every turn, and often infinite.
• Prize Pig

  1G

  Creature — BoarG

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

  4U

  InstantU

  Intellectual Offering untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Unstoppable Plan

  2U

  EnchantmentU

  Unstoppable Plan untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Phial of Galadriel

  3

  Legendary ArtifactC

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

  3GG

  Creature — SpiritG

  Seedborn Muse untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Unwinding Clock

  4

  ArtifactC

  Unwinding Clock untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Paradox Engine

  5

  Legendary ArtifactC

  Paradox Engine untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Dramatic Reversal

  1U

  InstantU

  Dramatic Reversal untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Blinkmoth Infusion

  12UU

  InstantU

  Blinkmoth Infusion untaps all (or many) permanents, refreshing Tower of Eons's tap activation.
• Professor Dellian Fel

  2BG

  Legendary Planeswalker — DellianBG

  Tower of Eons gains life in big chunks or many small hits, fueling Professor Dellian Fel's life-gain payoff.
• Nazar, the Velvet Fang

  3B

  Legendary Creature — Vampire WarlockB

  Tower of Eons gains life in big chunks or many small hits, fueling Nazar, the Velvet Fang's life-gain payoff.
• Karlov of the Ghost Council

  WB

  Legendary Creature — Spirit AdvisorBW

  Tower of Eons gains life in big chunks or many small hits, fueling Karlov of the Ghost Council's life-gain payoff.
• Amalia Benavides Aguirre

  WB

  Legendary Creature — Vampire ScoutBW

  Tower of Eons gains life in big chunks or many small hits, fueling Amalia Benavides Aguirre's life-gain payoff.
• Trudge Garden

  2G

  EnchantmentG

  Tower of Eons gains life in big chunks or many small hits, fueling Trudge Garden's life-gain payoff.
• Resplendent Angel

  1WW

  Creature — AngelW

  Tower of Eons gains life in big chunks or many small hits, fueling Resplendent Angel's life-gain payoff.
• Murderous Betrayal

  BBB

  EnchantmentB

  Tower of Eons gains life in big chunks or many small hits, fueling Murderous Betrayal's life-gain payoff.
• Comforting Counsel

  1G

  EnchantmentG

  Tower of Eons gains life in big chunks or many small hits, fueling Comforting Counsel's life-gain payoff.
• Starscape Cleric

  1B

  Creature — Bat ClericB

  Tower of Eons gains life in big chunks or many small hits, fueling Starscape Cleric's life-gain payoff.
• Qala, Ajani's Pridemate

  3W

  Legendary Creature — Cat WarriorW

  Tower of Eons gains life in big chunks or many small hits, fueling Qala, Ajani's Pridemate's life-gain payoff.
• Sorin of House Markov // Sorin, Ravenous Neonate

  1B

  Legendary Creature — Human Noble // Legendary Planeswalker — SorinBW

  Tower of Eons gains life in big chunks or many small hits, fueling Sorin of House Markov's life-gain payoff.
• Ocelot Pride

  W

  Creature — CatW

  Tower of Eons gains life in big chunks or many small hits, fueling Ocelot Pride's life-gain payoff.
• Crested Sunmare

  3WW

  Creature — HorseW

  Tower of Eons gains life in big chunks or many small hits, fueling Crested Sunmare's life-gain payoff.
• Lunar Convocation

  WB

  EnchantmentBW

  Tower of Eons gains life in big chunks or many small hits, fueling Lunar Convocation's life-gain payoff.
• Redirect Lightning

  R

  Instant — LessonR

  Tower of Eons gains life in big chunks or many small hits, fueling Redirect Lightning's life-gain payoff.