Bile Blight BPhillipYork: This is solid creature removal for BB, goes through indestructible
In these extremely rare cases, uncommon cards can be worth hundreds of dollars
Traditionally, most of the morph, manifest, or similar decks utilize blue and black, with green as an additional option for a third color
Your win con is probably using cards like Tezzeret, Master of the Bridge and such to lean into the life loss aspect, but you could do any number of wincons really
Its not hard to sacrifice permanents in Orzhov, and its probably a good job that this is only limited to your own turn, as an anthem version of Meren would be bonkers good if it triggered each time a creature died