A wave of arcane energy spreads out from a point of your choice within range.  Choose up to three willing creatures in a 30-foot-radius sphere centered on that point. While the targets remain in the sphere and until the spell ends, the targets speed is doubled, they gain a +2 bonus to AC, have advantage on Dexterity saving throws, and gain an additional action on each of their turns. That action can be used only to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action.

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