Poseidon's Trident is a Legendaryaccessorycosmetic that was introduced in 0.1.0 and got reintroduced at the start of Open Beta as a part of season 1(0.8.0). The cosmetic was obtainable from level 30 of the premium Battlepass, and when the season ended it moved to the Legacy Machine, where its blueprint can now be obtained at random.
It rewards the player with a total of 75 Style Trophies.