If an effect allows a land card to be played, other parts of that effect can find the new object that land card becomes after it moves to the battlefield as a result of being played this way.
April 22, 2021 · Strixhaven
After resolving a madness triggered ability (see rule 702.35), if the exiled card wasn’t cast and was moved to a public zone, effects referencing the discarded card can find that object.
May 3, 2019 · War of the Spark
After resolving a madness triggered ability (see rule 702.34), if the exiled card wasn’t cast and was moved to a public zone, effects referencing the discarded card can find that object.
January 25, 2019 · Ravnica Allegiance
After resolving a madness triggered ability (see rule 702.34), if the exiled card wasn't cast and was moved to a public zone, effects referencing the discarded card can find that object.
April 28, 2017 · Amonkhet
After resolving a madness triggered ability (see rule 702.34), if the exiled card wasn’t cast and was moved to a public zone, effects referencing the discarded card can find that object.