Tryndamere's abilities have no cost related to them, and the use of his abilities is only limited by cooldowns. Instead he uses Fury as his secondary resource. Tryndamere starts with 0 Fury, and has a cap of 100 Fury. He gains 5 Fury per autoattack, plus 5 extra Fury per critical strike and 10 extra Fury per any unit he kills. When Tryndamere has not dealt or taken damage for 5 seconds, Tryndamere is considered out of combat and loses 5 Fury every second.