Accelerate 2014

Choose up to three willing creatures within range, which can include you. For the duration of the spell, each target’s walking speed is doubled. Each target can also use a bonus action on each of its turns to take the Dash action, and it has advantage on Dexterity saving throws.

When you cast this spell using a spell slot of 4th level or higher, you can affect one additional creature for each slot level above 3rd.