He's using the tactic of lightening Ay's body to make him faster in the air. Then, when very close to Madara, amplify his body's weight by a large factor to increase the impact of his punches.
Ohnoki is making Ay fly, making him faster with his Super Lightened-Boulder Jutsu and stronger with his Super Weighted Boulder Jutsu. Come to think of it, Ohnoki is the perfect support for characters like Ay, Tsunade, Guy etc, that are close combat fighters.![]()