Domain Expansion (Hell)

You evoke the power of the domain of hell itself granting power to all allies within a 30ft radius of the caster. Friendly creatures inside the radius attacks gains the caster spellcasting modifier in additional damage on all attacks rolls. Also during the duration of this spell as a reaction a friendly creature inside the aura can draw upon the power of the to add the caster proficiency bonus to an attack roll, ability check or saving throw. Each creature can only benefit from this reaction once, per cast of this spell.