Overview
Eikthyr is one of Valheim's environment / weather states, identified internally as Eikthyr. Force the world into this environment with the cheat command env Eikthyr, and return to natural cycling with resetenv. Environment changes are useful for screenshots, testing biome-specific events, or just resetting bad sailing weather.
About
Eikthyr is the boss-fight environment that activates during the Eikthyr encounter in the Meadows. It applies a thunderstorm with lightning and heavy wind around the Forsaken Altar.
Commands
Sets the current environment to Eikthyr.
Resets the environment to its natural state.