Possible Bug - Bone Sabre's Effect Absent With Crippling Blow/Zails Hymn Another Ally

[UNIONRULER]

Kindly see my rated games with SET Joker and Smoyer1213 (at end). When I encountered first time I thought maybe I didn't think of something but it happened again so just wanted to report.

[Shadow Era]

Bone Sabre says "At the end of combat where an opposing ally was damaged by Bone Sabre, that ally is attacked by the friendly Undead ally with the highest attack if able."
So if your Undead ally with the highest attack is not able to attack because of Zail's Hymn attached to it etc, then it won't attack because of Bone Sabre either.
Is this what you mean?

[UNIONRULER]

In the game with SET Joker, there was ally with 0 current/ 3 gross attack due to crippling blow, and I had other undead allies with 5 attack. That I still can't wrap my head around.

Zail's Hymn I guess it processed left to right on equal attack allies, so that explains the game with Smoyer1213.