Aeolian Cassock

An Aeolian Cassock is a Robe-class armor found in Golden Sun: The Lost Age. It is obtainable only as a rare drop from Wyvern enemies in Jupiter Lighthouse. Being a Robe, it can be equipped by Jenna, Ivan, Sheba, and Mia. Its buy value is 11400 coins and its sell value is 8550.

The Aeolian Cassock increases the wearer's base defense by 46, and it increases Jupiter power by 15 and Jupiter resistance by 50. It is widely considered an inferior version of the Feathered Robe, which has 20 Jupiter power, 30 Jupiter Resistance, and most notably of all, 30 Agility, all of which contribute to that item being one of the best items in either game. While the Cassock's 15 Jupiter Power is only somewhat lower and could still suffice as a boost to Jupiter Power for an Adept like Sheba, and the much-enhanced Jupiter Resistance is of a notably high value, the fact it does not have any of the Feathered Robe's powerful Agility boost makes the Robe far superior to the Cassock in this case. The Feathered Robe can be dropped earlier, too.

Cultural references
Aeolus was the god of wind in Greek mythology, which explains its ties to the Jupiter element. The Aeolians were a race of Greek people allegedly descended from the Greek god Aeolus.