Thunderclap Impulse

You channel magical lightning through every nerve in your body, quickening your speed, perception, and reaction time. You gain the following benefits until the spell ends:

• You have a bonus to AC equal to your spell casting modifier.
• Your movement speed is doubled.
• You have advantage on Dexterity checks and saving throws.
• You gain an additional action and bonus action on each of your turns.
• You take an additional turn each round at half your current initiative (Rounded Down). 

When the spell ends, the target can’t move or take actions until after its next turn, as the backlash sweeps over it.