It is time to delve a bit deeper into the gameplay.
Of course a game is always moving and changing, some more than others, and for sure there will be adjustments, but it is important to start with a vision, a guiding light to follow during the development. For WD the main concept is the one of spirits and effects and their combinations.
In the world of WD wizards are individuals that know how to forge pacts with spirits or bind them at their command. In particular, each time a wizard bonds with a spirit she will be able to borrow its power to manifest a specific effect in the form of a spell.
Your character will not actually gain levels but will instead bond with more spirits and thus unlock more powerful effects that will gradually open up more strategical options. An example that I have already used is to cast Ice on the floor and then use Wind to push an enemy over a cliff.