Kallana

On Kallana, the Ori finally show what they're capable of. They manipulate the fundamental forces of the universe, play with matter on an unimaginable scale, and turn the planet into a construction site for their invasion. For the peoples of the Milky Way watching, it's a shock: no known power does anything like this.

But this demonstration comes at a price, and a terrible one: Kallana is sacrificed, crushed, to give birth to the Supergate that will let the Ori fleet through. An entire world destroyed as a mere step in a building project. Kallana is the first real glimpse of the crusade to come, and proof that this time, the enemy is in a league of its own.