As you level up your compendium by completing objectives and correctly predicting results you’ll earn additional rewards. The compendium points section will show you how many points you need for your next level and what you’ll earn at each milestone. Your compendium will level up for every 100 points earned.
Higher level compendium owners will earn custom visuals, including modified teleport effects, base healing effects, and even new appearances for Bottle, Blink Dagger, and Dagon. These level up Custom Effects last until July 28th.
The second page of the compendium points section will give you a list of objectives you can complete to gain additional points. You’re also able to purchase compendium points directly from the Dota 2 store.