Creatures that make mana (mana dorks), artifacts that make mana (mana rocks), Rampant GrowthRampant Growth-type effects, "rituals" like Dark RitualDark Ritual, cards that make Treasure tokens
This makes Emry, Lurker of the Loch a kill on sight card since it will essentially offer a repeatable Ancestral Recall turn after turn, so long as you had a strong opening sequence with a Drix Interlacer
It seems a reach to imagine this working in Standard, but Im looking at Mandible Justiciar, Thousand Moons Smithy, and even Dowsing Device
Most serialized cards are also Multiverse Legends cards, though there are a few serialized versions of new cards from March of the Machine
1 Tony Tony.Chopper (Alternate Art) (Manga) - $627.57 The Cutest Little Guy It wouldnt be a One Piece set without a manga rare