Can Nocturne's ability be used to play him when he is revealed (such as with Teemo Strategist revealing top 5 cards), or does it only work when 'looking' at cards?

Ruling: Nocturne's ability does work when he is revealed, not just when looking at cards.

Nuances:

• There is conflicting information from different sources (Kelly vs Dave), with Dave being adamant that it works
• The exact mechanism of how it works is not yet fully defined
• This interaction needs official clarification