Battle Ballad

As a bonus action you can start an intense musical ballad, you are able to invigorate nearby allies. When you cast this spell, choose any number of creatures within 30 feet of you. Creatures affected by the spell have their speed increased by 5, their AC increases by 1, and gain a +1 bonus to attack rolls. 

On subsequent turns you can use your bonus action to maintain the ballad in order to maintain the spell.

At Higher Levels. When you cast this spell using a 5th level spell slot or higher, for every 2 spell levels above 5th increase the speed by 5, AC by 1, and bonus to attack rolls by +1