chaos lightening blast

you spend two actions charging in which you can do nothing but focus on the spell  after the charge is complete  you may send a triple bolt of red blue and green lightening in which the bolts go 100 ft. in a line and then explode in a 100 ft. radius  the bolts do full damage of the amount rolled and the blast is halved 

the green bolt does 

5d10 necrotic damage

the blue bolt does

5d10   lightning damage

the red bolt does 

5d10 fire damage

the saving throw is wisdom  plus your spell casting modifier 

and for anyone to see but not hit by the spell most make a con saving throw not to be blinded and defended 

con save same as dex

when cast at ninth level all damage types go up by 1d10