Trident of Poseidon

Weapon (trident), legendary (requires attunement)

Poseidon was the only person known to wield the trident, which was made by the Arimaspos, in the war against the Titans. Poseidon’s golden trident is arguably the second most powerful artifact of the gods. With this mighty weapon, he rules the seas with an unforgiving hand.

You gain a +3 bonus to attack and damage rolls made with this magic weapon. The trident has 6 charges. If you are holding it, you can use an action to expend 1 charge from the trident and choose one creature you can see on the ground within 120 feet of you. A fissure opens under it if it is on land or a tidal wave if at sea. The target must succeed on a DC 20 Dexterity saving throw or disappear into the fissure or tidal wave and be destroyed, leaving no remains.

No trace is left of its existence. When you expend the last charge, the trident returns to Poseidon.