Bident of Thassa’s Beloved

Weapon (trident), artifact (requires attunement by a creature that worships Thassa) Price: 300,000-500,000 gp | high sentimentality

This favored weapon of Thassa, god of the sea, is obviously not one she wields—a god would never forfeit her signature weapon… But this bident bears her touch, a blessing conferred to a favored champion. Why it’s now before you is a mystery. Perhaps the champion fell, perhaps the bident became an heirloom passed down so long its true nature became forgotten, or perhaps Thassa has designated you as her new beloved champion. If you hold the weapon and meditate, you hear whispers of Thassa’s philosophy that the sea both ebbs and floods—sometimes you must give before you achieve overwhelming, total victory. The bident is a magic weapon and also functions as a trident of fish command. On your turn, while you carry the bident, you gain an action for each time you suffered a hit since the end of your last turn.

The bident has 4 charges, which are used to fuel spells divinely bestowed by Thassa with no components required. If you’re otherwise unable to cast spells, use Charisma for your spellcasting ability modifier. With the bident in hand, you can use your action to cast one of the following spells: wall of water (1 charge), watery sphere (2 charges), or tsunami (3 charges). The trident regains 1d4 expended charges daily at dawn. Once a day, while wielding the bident, you may implore Thassa for a blessing. If you haven’t offended Thassa (determined by the DM), roll on the Thassa’s Blessings table to determine the effect.

Thassa’s Blessings

d4Effect
1You gain a creature companion as if using a conjure animals spell. The creature is a giant sea horse if you’re underwater, otherwise it’s a warhorse.
2You heal a number of hit points equivalent to rolling all your hit dice. This effect doesn’t expend hit dice.
3You gain a +3 bonus to AC for the next hour.
4The bident regains all expended charges.

Overpaid

Once a day for the first 10 days after you attune to the bident, you can cast the commune spell without requiring material components to contact Thassa.

Destroying the Bident of Thassa’s Beloved

You can’t easily unmake a weapon blessed by the gods. There are only two ways to destroy such a weapon: melt it down in Purphoros’ forge, which resides within Mount Velus, or slay the god who blessed the weapon—in this case, Thassa—to transform the weapon into a nonmagical item that is susceptible to all methods of destruction.

Source: The Gray Merchant of Asphodel