Han Sen knew he did not have much time left. If his power was consumed too much, even if he had a way to break the world with his Super God Spirit mode, he would not have the power needed to break the world.
He needed to let his Super God Spirit mode break the world, but his power was too far depleted.
The Ultimate Egg was still reversing Han Sen's power. It made him keep switching between the Super God Spirit mode and reverse Super God Spirit mode. When he was in reverse Super God Spirit mode, Han Sen felt its amazingness.
The Super God Spirit mode's power was invincible. The reverse Super God Spirit mode could consume everything. It felt like the reverse Super God Spirit mode had more of a destructive power, but it was just that the powers were different.
Originally, Han Sen had greatly desired the reverse Super God Spirit mode. The Ultimate Egg's features enabled Han Sen the chance to claim the reverse Super God Spirit mode.