Thunderclap Impulse

you channel lightning through your body to quicken your body's speed and reaction time

while you are concentrating on the spell you take an additional turn at half your current initiative count (rounded down), your ac is increased by 2 and you can take the dodge action as a bonus action.

if you lose concentration on the spell or drop concentration on the spell before the spell ends, you become Paralyzed till the end of the next turn and gain 2 levels of exhaustion ( this can't be prevented )