Ditty of Damage

You begin a catchy little tune to help your allies in the thick of battle. Each allied creature within the the radius can add an additional +1 to damage rolls of their weapons and spells. The allied creature must be able to hear you.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you increase the damage bonus by +1 for each slot level above 1st.