A Shadow Creature that is able to be seen but not yet aggressive towards the players can be aggroed indirectly with the Weather Pain. This can be achieved by using it on some structure or creature which is on the other side of the Shadow Creature. When the projectile is launched, it is able to interact with the Shadow Creature before hitting the other target. This causes it to be aggressive towards the player for a short time.
Due to the fact that the Moose/Goose only drops up to 5 down feathers, it's impossible to craft this without fighting the former twice or fighting Moslings.
However, using a Construction Amulet will make it possible to craft.
バグ
If the Shadow Puppets summoned with Maxwell's Codex Umbra are hit by this weapon's projectile, they will become hostile.
If a Shadow Creature is hit by this weapon's projectile, it will become hostile to the player, regardless of Sanity level.
If a static Character (a player character summoned by commands) is hit by this projectile, it will be briefly hostile.
If Abigail is hit by this weapon's projectile, she will try to attack and no longer follow Wendy.
ギャラリー
The Weather Pain's whirlwind after destroying a Poisonous Birchnut Tree.
The Weather Pain being used against a Big Tentacle. The whirlwind will make quick work of the Baby Tentacles.