This works in loads of black decks, such as Zombie tokens (as it doesn't specify 'nontoken') or, of course, sacrifice-heavy Aristocrats decks
Doomsday Excruciator | Illustration by Denys Tsiperko Demons are one of Magic's most iconic black creatures
It is best to keep in mind that it is a system that matches 'roughly the same power' decks
The next slot has serialized Realms and Relics (30 cards, 0.2% overall), the regular surge foil Realms and Relics (30 cards, 12.6% overall), Surge Foil Uncommons (10 cards, 50% overall), Rares (5 rares, 11.7% overall), Mythic Rare (6 cards, 2.5%)
As long as you can hold on to The Monarch, youll be getting an extra copy of Luck Bobblehead on each of your upkeeps
Knowing this, WotC has made a special ruling that it is still legal to play with Faceless Haven as part of this Challenger Deck but ONLY if you are playing the EXACT 75-card decklist included in the box