Martial Poise Exploit [GAMEPLAY]

Was recently in a game where Kalista was on the other team and one of my friends was playing lulu. Every time a fight broke out lulu would poly morph Kalista, yet she was still able to auto attack by abusing martial poise.

To recreate the bug have kalista begin using martial poise using the move/auto attack hot key followed by lulu pollymorphing her.