Astlyr, the Battle Maiden is a custom champion in League of Legends.
Astlyr's abilities have no cost related to them, and the use of her abilities is only limited by cooldowns. Instead she uses Fury as her secondary resource. Astlyr starts with 0 Fury, and has a cap of 100 Fury. She gains 5 Fury per autoattack, plus 5 extra Fury per critical strike and 10 extra Fury per any unit she kills. When out of combat for 5 seconds, Astlyr loses 5 Fury every second.