These are cards with upkeep costs that cumulate over each turn, as the name implies
$0.49 Omniclown Colossus Unfinity $0.35 The Big Top Unfinity $0.49 D00-DL, Caricaturist Unfinity $0.35 T.A.P.P.E.R
It was good at smashing artifacts, sure, but red didnt do too well at putting them back together
So, instead of having a list with several versions of the same effect, I combined similar cards into a single spot so that I could have a more diverse list of aggravating cards
For example, if you control a creature and your opponent targets it with a Doom Blade, you could sacrifice it to an outlet like Carrion Feeder after Doom Blade hits the stack but before it resolves
It may not be the best build for them, but it can serve as a baseline for your deck construction in the future Variant Discussion: You know the saying you can throw Artifacts into anything and make it better