Players could just open their new Engrams to get items from Season of Arrivals, but the loot pool was pretty big — making it unlikely that they’d get exactly what they wanted.
Instead of being a piece of armor or weapons, players could focus their Umbral Engram to just be weapons.Starting in season 13, players can take these Umbral Engrams to a new Prismatic Caster — which requires a one-time quest to teach players how to use it — to decode them into new weapons from that season.
There will also be a new currency called the Prismatic Lense, which will allow players to further focus their Umbral Engrams.