Which keywords does Kuni Wasteland prevent? Covert is obviously initiated and can be prevented if face up. Will Pride or Courtesy be stopped?

Can I play a character using Disguise while attacking this province?

Does the ability affect the opponent or their cards? Can I trigger abilities on characters not in play, e.g. Feral Ningyo?

Just now, Bayushi Shunsuke said:

Which keywords does Kuni Wasteland prevent? Covert is obviously initiated and can be prevented if face up. Will Pride or Courtesy be stopped?

Kuni Wasteland stops all keywords on (in-play) characters during conflicts at the province—that mostly means covert and pride, though it could also stop courtesy and/or sincerity if a character were to leave play during the conflict.

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Can I play a character using Disguise while attacking this province?
Does the ability affect the opponent or their cards? Can I trigger abilities on characters not in play, e.g. Feral Ningyo?

It does not prevent keywords or abilities on out-of-play characters, such as disguised or Feral Ningyo (those abilities continue to work as normal).

[Tyler Parrott, 25 Nov 2019]

Does Kuni Wasteland stop forced triggered abilities?

Just now, Bayushi Shunsuke said:

Does Kuni Wasteland stop forced triggered abilities?

Kuni Wasteland does not prevent Forced abilities from triggering (as those abilities are triggered by the game).

[Tyler Parrott, 25 Nov 2019]