How to scryfall for 2-faced cards

I wanna find a really specific, potentially not real card for a stupid deck with umori.

But it'd need to be a legendary creature, with a green/black, and a sorcery card on the back half. I have no clue how to specifically search for those cards on scryfall, and do not want to look at every green/black commander to try and find it

If you know an easier way to search for these things, it would be greatly appreciated!