You can level up your young wizard by levelling up his wand, as well as increasing your Combat Power (CP).

Visit the Wandmaker Eldrics desk at the Hideout, where you first start out your adventure, or tap the Mail button from the lower left corner.

Then locate Tool Upgrade button

And finally - choose the tool you wish to upgrade.

Upgrading all tools requires time and resources. Make sure to have enough, or purchase the missing ones via gems.

With each new zone the wand level that you can reach, will increase.