Collection Or Clause

Shopify Partner
15 0 2

Hey Everyone,


I'm looking for a recommendation on putting a couple of items on sale these items going on sale are variants.


My first instinct was to create a collection page but when defining an auto collection there's no clause grouping possible. For example I wanted to do something like this which in admin panel doesn't seem possible.


( product.title = 'this' and variant.title = 'that') or (product.title = 'where' and variant.title = 'when')


Would I be better off just having a sale page and in the liquid only list the variants I want too?