Fabricate Sorcery Search your library for an artifact card, reveal it, put it into your hand, then shuffle
For cube however playability is such a massive consideration for potential additions that it is my go to attribute for rating cards
Either way, if your meta is creature-heavy, Balefire is the kind of card that ends arguments fast
Pitiless Carnage Marcy: Some form of Aristocrats is going to make very good use of this card, and the Plot cost will allow you to set it up so that while people see it coming, it also means you've got time to get your combo exactly the way you want it, and to just go for the throat from there
Though typically known for being yellow, they are found in different colors throughout the Final Fantasy games