Quick reference
- Feature type: Temporary story reward attached to the Hammer of Grondar.
- Effect: The restored Hammer can cast thunderwave once.
- Expiration: The use is lost at the next dawn.
- Requirement: The Frostline adventure follows Battle of the Mountain Pass and the missing shard is restored.
How it is earned
The party retrieves the splinter lodged in the Thunder Beacon and has it reforged into the Hammer. The renewed weapon briefly retains the mountain’s accumulated thunder.
How to describe it
The repaired seam glows like stormlight behind a cloud. When the ability is invoked, the Hammer rings with a clear dwarven note before releasing the spell.
Game Master guidance
This is intentionally a short-lived bonus that rewards continuity between adventures. If the players save it beyond the next dawn, the resonance fades even though the Hammer keeps its ordinary established properties.
Related entries
Hammer of Grondar · Thunderwave