This card had an errat in RRG 1.7, to specify who should resolve the ability.
It should read:
When Defeated: The defeating player searches the encounter deck and discard pile for a copy of the Misled treachery and shuffles it into their deck.
Sobald besiegt: Durchsuche das Begegnungsdeck und den Ablagestapel nach einem Exemplar des Verrats Irregeführt und mische es in dein Deck.
This card had an errat in RRG 1.7, to specify who should resolve the ability.
It should read:
When Defeated: The defeating player searches the encounter deck and discard pile for a copy of the Misled treachery and shuffles it into their deck.