Perhaps I am misreading "gave spying to", but I was expecting Artaud Terranova to be able to dupe Vypper who gets spying when it moves from your graveyard to the opponent's board. I can spawn it if I first use a card that applies spying (again) to the Vypper card, but why should be necessary. Disloyal cards are excluded by Artaud Terranova's text, but not cards that moved to there by other effects, like Seize.
Is this a bug? Or just a bad reading of the text on my part?
SPYING: Status given to unit spawned, played, or moved to the opposite side of the battlefield.
DISLOYAL: This card is played on the opposite side of the battlefield.
SUMMONED: Move automatically to the battlefield (not considered played).
Artaud Terranova: Spawn and play a copy of any non-Disloyal unit you gave Spying to during the game, excluding self.