P1 AI
The Storm Weaver is a post-Moon Lord boss and one of the Sentinels of the Devourer. It drops Armored Shells, which can be used to craft the Cosmic Worm.
The Storm Weaver does not spawn on its own, and requires the player to summon it by using the Rune of Kos in Space. It begins raining when the Storm Weaver spawns. If the Storm Weaver is encountered in its "hunt" state, using the Rune of Kos will cause it to stop hunting and begin attacking immediately.