This is a resource pack / texture pack that changes the texture of the "Checkist" book in the mod "Checklist". Checklist is a mod that makes it so modpack makers, can setup a book. That have task, that the player can check off to complete. Original the book in that mod is orange.
This pack changes it so the book is themed around Pokemon. It was made for the modpack "Pokehaan Craft 1" and "Pokehaan Craft 2", that uses the Pixelmon mod. But anyone can use this resource pack, as long as they use the Checklist mod.
In this pack the book changes to being in red, and having a Pokeball logo on it.
Screenshot of how it looks ingame: