-
You can manage & track your card collection and decks once you create an account and login.

Nightbird stealing cards from an opponent's scrap pile: Can I keep them after playing them?

No. Any action you play from your opponent’s scrap pile goes into your played area, and eventually back to their scrap pile. (Cards always go to their owner’s hand, deck, KO area, and scrap pile).
Source: Wizards of the Coast (2019-11-09)    【Link to Ruling】
Tags: Nightbird, Enigmatic Agent