How will Allah Almighty destroy the Sufyani, and who will kill him?

Answer

In the name of Allah, there will be a confrontation between the Imam's (may Allah hasten his reappearance) army and the Sufyani's army after the earth swallowing incident (Al-Khasf), during which the Sufyani and his followers will be killed. This has been narrated by Amir Al-Mu'minin (PBUH) in Tafsir A-Ayyashi. Allah knows best.