Sacred Games Season 1 Episode 3 - Minimal Poster

Ilvala (Atapi) and Vatapi were rakshasas and brothers.

Vatapi knew the art of transformation and had the power to change into any life form. Ilvala knew the ‘Mritasanjivani’ mantra to bring back the dead. They used these powers to loot and kill. Ilvala invite a brahman to a feast and Vatapi would turn himself into a Goat.

Brahman would eat the goat, and then Atapi would call him: "Vatapi! Vatapi! Come out. Come here."
Then Vatapi would rupture Brahman's stomach and come out alive.