There are all sorts of ways to empty your library in Magic, so winning with the Oracle is remarkably consistent

March of the Machine Details Preorder Now March of the Machine Set Code : MOM March of the Machine Commander Set Code : MOC March of the Machine Multiverse Legends Set Code : MUL Tabletop Legality (New-to- Magic Cards) : March of the Machine (MOM): Standard, Pioneer, Modern, Legacy, Vintage, and Commander March of the Machine Commander (MOC): Legacy, Vintage, and Commander March of the Machine Multiverse Legends (MUL): Individual cards may be used for the respective formats in which they are legal MTG Arena Legality : March of the Machine (MOM): Standard, Explorer, Alchemy, and Historic March of the Machine Commander (MOC): Not available on MTG Arena March of the Machine Multiverse Legends (MUL): Historic plus individual cards may be used for the respective formats in which they are legal Website : March of the Machine March of the Machine Important Dates : March of the Machine Story : Available now

Also note that most mana dorks have an activated ability (cards like Magus of the Vineyard do not)
The one that sticks out to me with no cost associated to the activation, is the comically mana-intensive Urza's Blueprints
We warned you it might get complicated