Overview
defeated_dragon is a Valheim global progression key — set when killing moder. Toggle it from the console with setkey defeated_dragon to mark the milestone, or removekey defeated_dragon to roll it back and re-enable the related boss or biome content. Global keys gate raid pools, world events, and trader inventory; unsetting one is the cleanest way to re-fight a boss on a long-running save.
Commands
Sets the Defeated Dragon global key.
Removes the Defeated Dragon global key.
Resets all global keys to their default state.