https://www.polygon.com/2018/9/6/17826248/destiny-2-forsaken-raid-banner-last-wish-super-ammo-consumable

Raids have always been the highest point of any Destiny experience. Players first fell in love with Destiny when the Vault of Glass released, and the Taken King expansion is best known for the excellent King’s Fall raid. Every Destiny raid going forward has had the same major problem: consistency. But Forsaken has finally provided a solution that players have been asking Bungie about for the last five years.

[Warning: Very minor Destiny 2: Forsaken vendor inventory spoilers are ahead.]