REDU format ruling
Nobleman of Crossout

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)Target 1 face-down monster on the field; destroy that target, and if you do, banish it, then, if it was a Flip monster, each player reveals their Main Deck, then banishes all cards from it with that monster's name.
Rulings
- On Duelingbook, if a card's text requires a player to reveal the Deck, the Deck does not need to be Revealed. (Deck verification is meant to be a quick process that does not allow a player to memorize the contents of the Deck.)
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.