Aeolian Cassock

An Aeolian Cassock is a Robe-class armor introduced in Golden Sun: The Lost Age. It is obtained as a rare drop from Wyverns in Jupiter Lighthouse in The Lost Age and obtained from a treasure chest at Apollo Ascent in Golden Sun: Dark Dawn. Being a Robe, it can be equipped by Jenna, Ivan, Sheba, Mia, Karis, Rief, Amiti, and Himi. It can be bought for 11400 coins and sold for 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.

In Dark Dawn, the player must first use Crush to clear the path in the second screen of the Apollo Ascent, then cross the gaps with Grip. One way leads to a ledge with another boulder where this treasure chest is hidden. The Aeolian Cassock is also a unique robe now because this is the only piece of its kind players will ever find in this game. Furthermore, this one is easier to access than the Feathered Robe (which is typically considered superior to the Aeolian Cassock), increasing its value by a certain degree as Dark Dawn's Random Number Generator cannot be abused like it was in previous games.

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.