went to test this myself out of curiosity because of that O&U 'test'
we know Hydras have complete resistance to breath damage so I used one of those as a test subject
[Prothescar] Thunder Breath <Thu'ban>
Arciela Haste II ¨ Arciela (Haste)
[Thu'ban] hit on <Prothescar> [[67]]
[Prothescar] Thunder Breath on <Thu'ban> [[0]]
Control for breath dmg: 0
[Prothescar] Requiescat <Thu'ban>
[Prothescar] Requiescat on <Thu'ban> [[6114]]
Requiescat for nonele: did damage
[Prothescar] Formless Strikes <Prothescar>
[2] [Prothescar] hit on <Thu'ban> [[0]]
[Prothescar] critical hit on <Thu'ban> [[0]]
[Prothescar] critical hit on <Thu'ban> [[0]]
[3] [Prothescar] hit on <Thu'ban> [[0]]
Formless Strikes: 0 dmg
[Prothescar] Chi Blast on <Thu'ban> [[0]]
Chi Blast: 0 dmg
Conclusions:
-Requiescat is not breath damage, it is nonelemental damage
-Formless Strikes and Chi Blast are breath damage, not nonelemental damage
I'd prove Murasamemaru but I turned mine in to Gorpa long ago. That said it always was nonele so no reason to believe it has changed.
tl;dr i was wrong about formless strikes and ***works as expected, all it really proves is that omega & ultima resist all nonelemental and breath damage in their master trial, which makes sense since that's the whole gimmick of the fight
anyway the nerf to twilight scythe was still pointless and dumb and i wouldnt have sex with it