Chry's Battle Ballad

By starting an intense musical ballad, you are able to enhance allies nearby. When you cast this spell, your musical ballad resonate from you in a 60-foot Emanation for the duration. Each creatures of your choice (including you) that can hear the ballad have their Speed increased by 10 foot, their AC increased by 1, and gain a +2 bonus to attack rolls.

Each turns, you must use your Bonus Action to maintain your Concentration, or the spell ends. The spell also ends if you end your turn Restrained.

Using a Higher-Level Spell Slot. The bonus to Speed is increased by 5, the AC by 1, and the attack roll bonus by 1 for every 2 spell slots above 3.