There needs to be an "everything including the kitchen sink" run. There will be lutz and other metallic swirls in there along with the oxblood and aventurine. All kinds of various fritts will be sprinkled all over them and they will also receive the chemical lustre treatment on top of that. I am talking all in/on the same marble. It will look horrible, but that doesn't matter. Lutz swirls that have been confettied are few and far between and I can only think of one run that had marbles with both lutz swirls and metallic swirls in the same marble so far.