How absurd, you ask
This card can quickly set you up for the win, helping you to pressure opponents again and again
With the release of Chaos Emperor Dragon - Envoy of the End and its ability to send all cards on field and in hand to the graveyard, you now had a two-card combo with searchers like Witch of the Black Forest to immediately search for Yata-Garasu and win the game
Then you add the Changelings: Chamelon Colossus, Changeling Hero, Changeling Titan, Taurean Mauler, and the mack daddy of them all, Mirror Entity
Horrors havent been built up over time to be a powerful creature type with lots of cross-creature synergy and anthem effects, like Zombies, Angels, and Elves, among others, have
As he sleeps, he enters the Spirit World and has to navigate through a forest filled with Minus Staves that cause the Minus Curse, an effect that reverses natural phenomena