Unified Blast

Fires an unaspected elemental blast at a target in range, dealing 1d6 force damage on hit. When this spell is cast, creatures who can see you can use their reactions to add an additional 1d6 damage of a damage type they can deal to the damage of this spell. Each damage type can only be added once.

At higher levels: Upon reaching levels 5/11/17, this spell's base damage is increased to 2d6/3d6/4d6 respectively. If a creature adding additional damage is at or above level 5/11/17, they add 2d6/3d6/4d6 of the chosen damage type respectively.