Magic Quarter
At the Magic Quarter you'll find your guardians. You start out with 1 guardian, the Fairy. When you have evolved your Fairy once, you will unlock the 2nd guardian, the Dragon.
Guardian Info
In the Guardian Info tab you can train your guardian every 8 hours. You can also enlighten the guardian at the cost of 20 dust without a cooldown. This is also the place where you can switch between the guardians. By clicking on the guardian you want, and click the "Set Active" button.
As guardians do not take damage, they have no health or armor. So the only main attribute displayed is Attack. There is also a guardian aura. This is a buff for your heroes or your game. The Fairy increases all attributes of all heroes. The dragon increases gold earnings. All auras are active at the same time.
Evolution
The evolution tab is unlocked once you make your guardian level 10. Once your guardian is level 10 you need 300 Strange Dust to evolve your guardian. When you evolve your guardian, their attributes and aura goes up by a lot.
Guardian Description
In this tab you find the (hi)story of your guardian.