Dukino's Red Rage

From your mouth pools a rosy pink mist, laced with the power of a Red Abishai. You spout a draconic command to your allies, bolstering their rage, even if only for a moment. Friendly creatures up to your spellcasting modifier gain advantage on their next attack roll.

Devil's Deal. As a bonus action while casting the spell, you can instead gain Dragonrot charges equal to the number of creatures affected by this spell to make the next attack from those friendly creatures automatically crit. Each creature affected this way suffers from 1 level of exhaustion.