Cheerful Readiness

You spend one minute improving a willing creature's confidence, quickening their reactions. For the duration, the target can add 1d8 to its initiative rolls. The spell ends if cast again before the duration finishes.

At Higher Levels.  You gain the ability to add an extra target when you reach 5th level (2 total targets), 11th level (3 total targets), and 17th level (4 total targets)