The aesthir are gigantic birds with wingspans 50 feet across. They are tamed and ridden by Kjeldoran Skyknights, who wield lances that are 30 feet long. Thus, a skyknight strikes down a foe twice; once with the thrust of the lance, and then with the backdraft of the aesthir's wings.
"High in the Karplusans, death is swift and razor-clawed." -Arna Kennerüd, skycaptain