If I look at 3 cards with Stacked Deck and all 3 are Nocturne, can I play all 3 Nocturnes or do I need to take 1 to hand?

Ruling: You can play all 3 Nocturnes. When you look at Nocturne, its triggered ability allows you to play it from there during the card resolution, moving it to the chain and leaving the looked-at area.

Sequence:

• Look at 3 cards with Stacked Deck, all are Nocturne
• Nocturne's effect allows you to play it from the looked-at area mid-resolution
• When you attempt to play all 3 Nocturnes, you move all 3 to the chain
• Try to resolve remaining Stacked Deck instructions ("take one in hand" - can't, no cards left; "recycle the rest" - can't, no cards left)
• Stacked Deck is now fully resolved
• Resolve all 3 Nocturnes pending in chain

Nuances:

• The card you put into hand is explicitly not drawn, which supports this interaction
• Nocturne has incoming errata, so this ruling may change in future versions