Creating a DM Book for a mod

I am trying to create a mod that introduces a book that when opened makes the player holding it a Dungeon Master or Game Master (so they can summon creatures, create loot chests, spawn in structures, create quests and so on) and adds new dimensions and weapons, foods, a dynamic interaction system, new creatures, magical items and so forth. I could really use some help.

I am currently looking for help with the book. How do I create a pop up gui in the game for the book so that the player can summon creatures (also, the player needs to be able to fly and be invincible and invisible, or like fake creative mode)?