Alchemical Armory

For the duration of this spell you may Choose a benefit at the start of each round of initiative Allies within 10ft of the caster may utilize the selected benefit
you may not select the same benefit two rounds in a row

You may select from these options

Sword: On your first melee attack while in this aura it gains an additional 1d4 Damage of the original weapons damage
 
Bow: you may use your bonus action to make a ranged spell attack Using the casters modifier dealing 1d4 force

Shield: While in this aura you have a plus one to your Armor class and if you end your turn here you gain 1d4 temporary hit points

At higher levels the auras range increase's by 10 ft. and the effects increase by 1d4 for each level beyond the first