While you might not have a Halloween themed cube, there are plenty of Magic sets that lean into horror, thrills and general scary vibes
I won't go deep into this topic here because this is a deck tech not a format philosophy piece, but suffice to say I think it's Mono Red, especially when you're on a budget and don't have access to the top handful of staples like Dockside Extortionist, Underworld Breach, and Jeska's Will
In the Faceless Menace deck, an army of face-down creatures keep your opponents guessingand keep you in control
Also, hes simply a stellar addition to most Bant decks, I do highly recommend grabbing a copy of him if you like that particular color combo
It also makes me want to rebuild my Isamaru, Hound of Konda deck