"Kill the Heretic Leader. The Prophets' will be done."
The Oracle is a Halo 2 campaign level, where the player plays as Thel 'Vadamee. Starting directly after you land the Banshee you were flying in the previous level, the opening cutscene has Rtas 'Vadumee comment on smelling a familiar stench. You will again have Spec.Ops. Elites and Grunts as allies and, possibly(Depending on difficulty), an Ultra Grunt.
This is the first level in Halo 2 where you encounter the Flood and some of their new abilities, most notably the ability of Infection Forms to revive fallen Combat Forms and the shielding on some Combat Forms.
