Mahito's Powers From Jujutsu Kaisen Explained
While Mahito's abilities in combat, centered around his Idle Transfiguration ability, provide the foundation for what makes him powerful, he's also an influential presence within the group of Curses attempting to reshape the Earth such that Cursed Spirits become its dominant lifeform. Even before his proper introduction as the villain of the Vs. Mahito Arc, Geto mentions in Episode 7 that they plan to seal Satoru Gojo's powers on October 31. Mahito promises to approach that plan, which has yet to be undertaken in the "Jujutsu Kaisen" anime, with human-like cunning.
He later demonstrates some of that cunning when manipulating Junpei into befriending and then fighting Yuji. Then, following the Vs. Mahito Arc, Mahito continues to lead the group of Curses from the shadows. Notably, during the Kyoto Goodwill Event Arc, while representatives from the Tokyo and Kyoto branches of Jujutsu High School are battling some of his powerful Cursed Spirit allies, Mahito successfully conducts a stealth mission to recover some powerful Cursed Objects from Tokyo's Jujutsu High. He succeeds, whereas most of his allies fall in battle, demonstrating that on top of his power as a fighter, Mahito's strategic intelligence is key to the Cursed Spirit team's plans moving forward.