Haste

Choose a willing creature you can see within the spell’s range. For the spell’s duration, the target’s speed is doubled, gaining +2 to AC, having advantage on Dexterity saving throws, and gaining an additional action on each of its turns. This action can only be used to make an additional attack on its attack action (but not spell attacks) or for the Disengage, Dash, Hide, or Use an Object actions.

When the spell ends, the target can’t move or take actions until the end of its next turn, because of the wave of lethargy that overwhelms it.