Transmogrants Crown is great in Teysa Karlov and other aristocrats-style decks, its great in go-wide decks like Chatterfang, Squirrel General, sacrifice-themed decks like Ghoulcaller Gisa or Korvold, Fae-Cursed King, and its even good in your average Equipment deck splashing black, like Syr Gwyn, Hero of Ashvale
NOTE: The photos show examples of the organizers in use
With it, Darkrai EX (EX) made for the perfect partner, as it is able to set up spread damage and give Yveltal EX free retreat with its Dark Cloak () Ability
None of the players are targeted
If you can Dark Ritual this out on turn 1 then its often just lights out for your opponents
Many of the cantrip artifacts are solid enough, especially in sacrifice-heavy decks