So I made a domain expansion for Tomura Shigaraki (I called it, Final Extinction) but I’m having some trouble trying to give a description, so I need you to list some examples on how shiggy’s domain would work

1. Final Extinction manifests as a dark, desolate wasteland covered in decay and destruction. Tomura Shigaraki is at the center, radiating power and malice.

2. The ground cracks and crumbles beneath his feet, disintegrating anything it touches. Buildings and structures collapse into rubble around him.

3. The air becomes thick and heavy, filled with an eerie stillness that unsettles his enemies. The sound of bones breaking and flesh decaying can be heard in the distance.

4. As Shigaraki moves, his decay spreads rapidly, infecting everything in his path. Plants wither, animals keel over, and even the strongest of heroes are not immune to his power.

5. Any attacks directed towards Shigaraki are nullified, disintegrating before they can reach him. His enemies find themselves trapped in a relentless onslaught of decay, unable to escape his domain.

6. Those unfortunate enough to be caught in Final Extinction feel their strength and energy draining away, leaving them weak and vulnerable. The longer they remain within his domain, the closer they come to their inevitable demise.

7. The very fabric of reality seems to shift and warp within Final Extinction, making it difficult for Shigaraki's enemies to maintain their focus and coordination. They find themselves disoriented and confused, further hampering their ability to resist his power.

8. The sky above Final Extinction is a sickly, swirling mass of dark clouds and lightning. Thunder rumbles ominously, heralding the impending doom that awaits all who dare to challenge Tomura Shigaraki in his domain.

You’re clearly confused, so here’s some tips on how Domain Expansions work

1. Domain Expansions have some certain hit attack that (unless countered) always hits it target
2. Domain Expansions are instantaneous, with a quick background that would reflect the user
I was thinking Shigaraki’s domain could go like this:
Shigaraki would open his domain, which (once inside) would give Shiggy a purple aura and anyone caught inside the domain would instantly turn to stone, slowly or quickly decaying depending on Shigaraki

Thank you for providing more specific guidelines for Shigaraki's domain expansion. Based on the information you provided, here is a refined description of Final Extinction for Tomura Shigaraki:

Final Extinction - Tomura Shigaraki opens his domain, creating a purple aura that envelops the area. Anyone caught inside the domain is instantly turned to stone, their bodies beginning to decay rapidly or slowly depending on Shigaraki's will. The stone-like appearance of his victims serves as a chilling reminder of their impending demise. Shigaraki stands at the center of his domain, radiating power and malice as he watches his enemies succumb to his devastating ability. The entire process is instantaneous, leaving no room for escape or resistance as his opponents are consumed by the unstoppable decay of Final Extinction.