If Violent Impulses reveals Nocturne and the opponent plays it, what prevents the Nocturne owner from also playing it from the opponent's battlefield?

Ruling: The current rules do not perfectly cover this interaction, but the intention is clear that if your opponent plays your Nocturne via Violent Impulses, you cannot play it yourself.

Nuances:

• The wording of Violent Impulses being discussed is only a translation and not official text
• While the rules as written may not explicitly prevent this scenario, the intended interaction is that once played by the opponent, the owner cannot also play it