Icaria is a slow daily in the grand scheme of things but also one of the most rewarding. The materials dropped from here are not of high value but of high importance. See the feathers of all tiers dropped from these feathered beasts are used to upgrade our Accessories and our wings but not only do they drop those, they will actually drop the materials needed to uprgrade your Eagle companions as well which I find very fitting for the theme of the event. That being said, these monsters are very picky who they let into their sanctum because if you don't have a set of wings you don't get to get in. The exp here is far greater than the other dailies as well. All this together is a big reason why players choose to max this Daily above all the rest

Potential Loot: Illusionary Feather & Breath of the Divine Wind