The Abyssal Trident is a meleeweapon exclusive to the Queen and the Sea DLC. It can launch a series of pushing attacks that score critical hits, and can also be interrupted for another critical hit.
The trident is found inside a lore room located in the Infested Shipwreck. To find the lore room the player must find 4 map parts that are dropped from random enemies. When all four are collected it combines into a mysterious map. It marks a spot on the map with an X symbol that leads to a breakable floor. Breaking it reveals the Forked Key which unlocks the lore room. Inside the room is a pedestal containing the Trident. When picked up it unlocks it permanently and drops a legendary version of the weapon.
"What a beautiful pedestal!"
"That trident must have belonged to someone important."
The rapid series of hits during the charge attack works well with any effect that's applied on each hit, and whose benefits don't quickly cap out; e.g. Combo's hit streaks grow without limit
Each hit during the charge can trigger the Blood Drinker aspect on a bleeding enemy.