To start - my VV pieces are dogshit and I only have Cresent pike, dragon's bane and dragonspine as 4* weapons so I'm tryna think out the box.

Dragon's Bane increases damage against enemies affected by pyro or hydro by 20%, Elem mastery would help with swirls a bit so not entirely useless

4 piece Lavawalker increases damage affected by pyro by 35%

55% bonus damage against pyro affected enemies

Xiangling and xinyan for consistent pyro application also gives pyro resonance so extra 25% atk

Then a healer, ideally Jean for battery but Barbara would help keep dragon bane damage up, and obvs Bennet.

Downsides are I'd lose 15% anemo dmg bonus and 18% atk from 2 piece VV and glad. Not sure on the maths but seems like a good trade off to me.

What do we think?