The blast is a blast of pure force energy, called from the stars into the user and launched out of them. Weather it's from their palm or their finger tips. This action greatly effects the user giving them two levels of exhaustion.

The diameter of the beam is 5ft. The beam also penetrates through targets.

on a failed dex save the target takes 12 d12 force damage as the blast hits them with power of the stars. After getting hit by the blast the target will get pushed back 5ft and knocked prone. The user will also get pushed back 15ft. The blast will also deal an additional D4 of fire damage and will be set on fire that was hit by it. If they succeeded the dex save they will take half of the damage you roll and won't get set on fire nor will be pushed back

At higher levels of mastery allows the caster to hold more energy. The Damage dice increases by 3 d12 every 3 levels above 9th.