47 cards where the cards aren’t reprints and the card is tagged “synergy-cycling”

Archfiend of Ifnir (Amonkhet #78)
Curator of Mysteries (Amonkhet #49)
Faith of the Devoted (Amonkhet #90)
Drake Haven (Amonkhet #51)
Shadow of the Grave (Amonkhet #107)
Fluctuator (Urza's Saga #295)
Astral Drift (Modern Horizons #3)
Valiant Rescuer (Ikoria: Lair of Behemoths #36)
New Perspectives (Amonkhet #63)
Drannith Stinger (Ikoria: Lair of Behemoths #113)
Gavi, Nest Warden (Commander 2020 #7)
Abandoned Sarcophagus (Hour of Devastation #158)
Astral Slide (Onslaught #4)
Flourishing Fox (Ikoria: Lair of Behemoths #13)
Herald of the Forgotten (Commander 2020 #27)
Drannith Healer (Ikoria: Lair of Behemoths #10)
Crystalline Resonance (Commander 2020 #31)
Zenith Flare (Ikoria: Lair of Behemoths #217)
Rooting Moloch (Ikoria: Lair of Behemoths #133)
Lightning Rift (Onslaught #217)
Hollow One (Hour of Devastation #163)
Unpredictable Cyclone (Ikoria: Lair of Behemoths #139)
Horror of the Broken Lands (Amonkhet #95)
Escape Protocol (Ikoria: Lair of Behemoths #48)
Spellpyre Phoenix (Commander 2020 #56)
Ruthless Sniper (Amonkhet #105)
Jo Grant (Doctor Who #23)
Vile Manifestation (Hour of Devastation #80)
Savai Thundermane (Ikoria: Lair of Behemoths #205)
Sacred Excavation (Amonkhet #67)
Prickly Marmoset (Ikoria: Lair of Behemoths #129)
Flameblade Adept (Amonkhet #131)
Grisly Survivor (Hour of Devastation #64)
Cunning Survivor (Hour of Devastation #33)
Shadowstorm Vizier (Amonkhet #206)
Snare Tactician (Ikoria: Lair of Behemoths #30)
Pitiless Vizier (Amonkhet #103)
Reptilian Reflection (Ikoria: Lair of Behemoths #132)
Invigorating Boon (Onslaught #267)
Zenith Seeker (Amonkhet #77)
Ominous Sphinx (Hour of Devastation #41)
Hekma Sentinels (Amonkhet #56)
Stoic Champion (Legions #21)
Withering Hex (Onslaught #181)
Fleeting Aven (Onslaught #83)
Warped Researcher (Legions #56)
Benalish Partisan (Jumpstart: Historic Horizons #3)

Though this query has ended, its relics still slumber in New Argive.