What items do I need to summon the Old Duke?

You'll need Bloodworms, which you can obtain by fishing using a Truffle Worm EX in the Sulphurous Sea.

Where can I find the Abyss biome in Terraria?

The Abyss biome can be found underground in the ocean areas of your world, typically in the deepest waters.

The Old Duke is considered a challenging boss fight in Terraria's Hardmode, so come prepared!

No, the Old Duke can only be summoned during Hardmode, so make sure your world has entered that state.

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Feb 10, 2026

To summon the Old Duke: Ensure you are in the Abyss biome during Hardmode. Acquire Bloodworms using a Truffle Worm EX while fishing in the Sulphurous Sea. Use the Bloodworms as bait while fishing in the Abyss to summon the Old Duke. Be prepared for a challenging fight!

What items do I need to summon the Old Duke? You'll need Bloodworms, which you can obtain by fishing using a Truffle Worm EX in the Sulphurous Sea.
Where can I find the Abyss biome in Terraria? The Abyss biome can be found underground in the ocean areas of your world, typically in the deepest waters.
What is the Old Duke's difficulty level? The Old Duke is considered a challenging boss fight in Terraria's Hardmode, so come prepared!
Can I summon the Old Duke in pre-Hardmode? No, the Old Duke can only be summoned during Hardmode, so make sure your world has entered that state.