A D&D 5th Edition Adventure for Levels 9-13

A Goddess Betrayed. A City Submerged. A Drowned King

A thousand-foot wave of divine fury crashed down on the city of Thalasson. Its sea goddess, Thyrella, had been betrayed by her own king, and the city paid the price. Now, the ruin of Thalasson is ruled by a Drowned King.

The vengeful agents of the sea goddess Thyrella have hired you for a quest for justice of epic proportions: to reforge the legendary weapon that can bring the Drowned King to his final end.

You must find the pieces of the Trident of Thyrella and reforge the divine relic.

Your Quest: Reforge the Trident

This high-stakes adventure plunges your party into danger, testing their mettle against unique undead and mythological beasts. Success depends on conquering three monumental challenges to gather the pieces of the trident and the key to its restoration.

Your heroes will face:

• Riverside Encounters: lampreds, harpy assassins, chimeras, crocettas, and the friendly Inn run by the centaur Trobert.
• The Howling Whirlpool (Charylykos): Battle the monstrous, undead hydra Kharybdoklystos as it guards the Trident’s head in a constantly churning vortex.
• The Coral Graveyard (Korallokoimeterion): Explore the cursed wreck of the Glaryphos, guarded by the cunning Sea Naga Nerophis and a coven of malevolent Green Hags.
• The Temple of Thyrella: Venture into the sunken ruins of the goddess’s temple to retrieve the Moon Lantern of Thyrella, an essential artifact for the reforging ritual.
• Magic Items: Discover and wield new items, including the powerful Moon Lantern of Thyrella and the fully restored Trident of Thyrella.

C9 Thyrella’s Trident is a mythological, marine-themed adventure that serves as a thrilling start to a high-level arc or a formidable standalone quest for any party seeking a fight that will shake the very foundations of the ocean.

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The adventure includes:

• History/Background
• New Monsters
• New Magic Items
• New Spell
• NPC Stats
• Color Maps
• Encounters

The companion ZIP file contains:

• Maps (with and without grid)
• Illustrations
• Fantasy Ground Unity Module
• Word File of the adventure

Available on Dungeon Master’s Guild