Ritual of the Season – Rapidly defeat opponents with a weapon matching the archetype of the current seasonal Legendary weapon 50 times.

There are two Triumphs that reset each season, so you could earn these every season and have them count towards Deadeye every time. While there are 31 different Triumphs that you need to earn to collect it, all you really need to do is pick up a bunch of kills with a variety of weapons. If you’re hoping to earn the Deadeye Seal for yourself, then you’re in luck.