Using the suns power, create a beam of pure solar power that strikes down anywhere in a 300ft radius and causes a sphere of 30ft to be engulfed by it.

Everything within that range must make a dex saving throw dc: 25 or take 15d10 solar damage or half as much on a successful

In exchange for using this spell it will be on cool-down 1d4 days before it can be used again.