I am going to emphasize not to worry about a power/ability list because your character will gain knowledge, experience, and have progress throughout the world to be able to add on new abilities or enhance the power of the abilities that are already stated. 

For example -> starting out you have fire ball -> you find a scroll of experience -> you read the scroll out loud -> you can cast a cluster of fire balls. 

This role-play is aimed for character development and interaction more than anything.