Surge

The user makes an explosion around them taking 2d6 force damage, On a hit everything in a 30ft radius takes 2d10 force damage and and 1d4 fire damage.

Higher level: At level 6 the damage the user takes is raised by an additional d6 and the opponent takes an additional 1d10 force damage and 2d4 fire damage and the range is increased by 10ft