If you use Promising Future to look at 5 cards and find a Nocturne, does playing it from Promising Future count as your one card play, or can you play Nocturne and then still play another card?

Ruling: You can banish the Nocturne from Promising Future, then play a different card from Promising Future, and then play the Nocturne once Promising Future fully resolves.

Sequence:

• Use Promising Future to look at 5 cards
• Banish Nocturne from those cards
• Play a different card from Promising Future
• After Promising Future fully resolves, play the banished Nocturne

Nuances:

• This interaction requires checking the Nocturne Horrifying errata