Name: The Land of Darkened Dreams

So basically, I have the ability to morph into any horror entity of my choosing. I gain the abilities, behaviours, and skill sets of the entity I choose to morph into.

Depending on the entity, my ability can also morph my surroundings, like an illusion― a living nightmare. For my surroundings, however, they are just illusions― meaning they aren't tangible (so Dazai can't nullify them without touching me physically lmao)

I feel like this would work so well, though, since we already know everyone's fears and have a whole lot of horror entities at our disposal (like Slenderman, etc.)