Alacrity

Choose a willing creature that you can see within range. Until the spell ends, the target's speed is increased by 30 feet, and it gains an additional action on each of its turns. This action can be used only to take the Attack, Cast a Spell, Dash, Dodge, or Use an Object action. When the target fails a Dexterity saving throw, it can use its reaction to succeed on that saving throw instead.

When the spell ends, the target can't move or take actions until after its next turn, as a wave of lethargy sweeps over it.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, it lasts for an additional round for each slot level above 5th.