Manifestation: Slate
"Do you like reading bestiary entries? Do you like being in contact with a demon? Wouldn't it be cool to work with the demon to change the bestiary entries to mess with the beasts they're based on? Then the Slate Manifestation is for you!
The Slate Manifestation allows the User to summon forth a small slab of stone, that is connected to a demon whose name we only know as Bad. This demon has its own opinions on many things, and "showing" the creature to the Slate (but not the other way around) and asking Bad for information will cause him to write on a similar Slate wherever they are, which magically appears on the Slate held by the User.
This information can then, for a cost, be changed and the change will be reflected on the object itself. For example, using Slate on a baseball may be returned as "A piece of cork covered in synthetic skin." The User could then change this, to read something like "It's a piece of pork covered in mustard." Or "It's a stone covered in human skin." Or even "it's a cube of tungsten covered with inscriptions." In this way, the baseball would become whatever the User wanted- within reason, of course!" -The Fool, on Slate with your help, we will be slated to start sooner than we thought. join the Brokerage.