The Eye of the Storm is a Hardmodeaccessory which drops from the Cloud Elemental. While equipped, it will summon a friendly Cloud Elemental to fight for you. She fights by dashing repeatedly towards enemies.
The Cloud Elemental minion can deal contact damage to enemies 3 times per second as a default, 4 times per second after the Golem is defeated, 6 times per second after the Moon Lord has been defeated, 10 times per second after The Devourer of Gods has been defeated and 20 times per second after Jungle Dragon, Yharon has been defeated.
The Cloud Elemental minion used to be called "Cloudy Waifu". After that, she was known as "Miss Cloudy".