19 cards where the card is tagged “synergy-menace”

Akroma, Vision of Ixidor (Commander Legends #2)
Altar of the Wretched // Wretched Bonemass (The Lost Caverns of Ixalan Commander #10)
Altar of the Wretched // Wretched Bonemass (The Lost Caverns of Ixalan Commander #10)
Animus of Predation (Conspiracy: Take the Crown #60)
Eater of Virtue (Kamigawa: Neon Dynasty #245)
Frillscare Mentor (Ikoria: Lair of Behemoths #121)
Indominus Rex, Alpha (Jurassic World Collection #14)
Kathril, Aspect Warper (Commander 2020 #10)
Labyrinth Raptor (Ikoria: Lair of Behemoths #193)
Majestic Myriarch (Commander 2020 #182)
Odric, Blood-Cursed (Innistrad: Crimson Vow #243)
Odric, Lunarch Marshal (Dominaria United Commander #103)
Priest of Possibility (Alchemy: Dominaria #2)
Rayami, First of the Fallen (Commander 2019 #48)
Selective Adaptation (Commander 2020 #65)
Sonorous Howlbonder (Ikoria: Lair of Behemoths #230)
Sproutwatch Dryad (Alchemy: Murders at Karlov Manor #20)
Tentative Connection (Ikoria: Lair of Behemoths #138)
Thunderous Orator (Strixhaven: School of Mages #35)
Urborg Scavengers (March of the Machine: The Aftermath #15)

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