Vishra's Diamond Blade Dance

Developed by the legendary Realmwalker Mage Vishra the Bloodless, in her arsenal of personalized arcane magic. Turn diamonds into dust in front of you, forming into sharp blades that tear apart anything in a 60-foot cone away from the caster. Each affected creature must make a Dexterity saving throw, taking 12d6 magical piercing damage on a fail, and half as much on a success. This damage increases by 2d6 for each level above 6th it is cast on. 

Created by the Bloodless: Reroll any 1s on damage dice for any spell from the learned mind of Vishra the Bloodless.