Scenario 1:

Viola's Pokemon:

Primarina

Eternatus

Inteleon

Ultra Necrozma

Noivern

Zacian

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Scenario 2:

Viola's Pokemon in Pokemon Sword:

Bubbles (Inteleon)

Eternatus

Leafeon

Blade (Zacian)

Noivern

Corviknight

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Scenario 3: Nuzlocke

Ocean (inteleon)

Raya (Flygon)

Melody (Lapras) x_x : Killed by Leon's Aegislash

Aira (Corviknight)

Blizzy (Glaceon)

Spooky (Haunter)