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Forgebound Seal

A rune-branded seal that drinks heat from the forge and binds it into steel. Passive: Whenever you use the Forge Artifact ritual, Miners, Harpoon Ballistas and Great Duke Cannons permanently gain +5% damage.

Main useA rune-branded seal that drinks heat from the forge and binds it into steel. Passive: Whenever you use the Forge Artifact ritual, Miners, Harpoon Ballistas and Great Duke Cannons permanently gain +5% damage.
When it mattersUse when mithril income, den rewards, or artifact forging is the limiting step.
Progression roleKeep it when its artifact tier and passive effect support your current build; compare it with the artifact guide before discarding.
Best follow-upBest Artifacts
SourceLate or unique artifact systems such as Treasure Hunter unique rewards, Forge Artifact choices, or a named source in Artifact Sources and Missing Relics.
RequirementNot part of the ordinary weighted artifact table.
Player noteIf this is the missing relic, check whether the page or Great World Spire Checklist names a specific boss, gate, or Alchemy source before grinding random dens.
SoundPreviewLength
Artifact Choice3.2s
Artifact Gained5s