Shyvana'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.
Fury is only needed as a requirement for the use of her ultimate Dragon's Descent, which allows her to change form if she has 100 Fury and remain in that state for as long as she has Fury. Shyvana won't generate Fury unless she has at least one point in Dragon's Descent, and once she puts the first point on the skill she will gain 100 Fury immediately. Any gained Fury cannot be lost except by depletion during Dragon Form.
Active: Shyvana's next autoattack will strike twice in one swift movement. The second attack will deal physical damage equal to a percentage of her total attack damage. Both attacks will trigger on-hit effects.
Second Strike Physical Damage:80 / 85 / 90 / 95 / 100% AD
Shyvana's autoattacks against non-structures reduce the cooldown of Twin Bite by 0.5 seconds.
Dragon Form:Twin Bite will damage all units in front of Shyvana when she uses her next autottack instead of just her target. Each unit hit will both trigger on-hit effects and grant FURY twice.
The only exception to Dragon Form'sTwin Bite applying on-hit effects and on-attack effects to the affected units is Tiamat and Ravenous Hydra's splash damage, as it has a 0.05 seconds internal cooldown when triggered on different targets. This is a special case to prevent abuse.
For the next 3 seconds Shyvana is surrounded by flames, dealing magic damage to enemies within 162.5-range. Shyvana's autoattacks extend the duration of Burnout by 1 second, to a maximum of 4 extra seconds.
Active: Shyvana unleashes a fireball that travels in a line, dealing magic damage and marking enemies hit for 5 seconds. Basic attacks against marked enemies deal bonus magic damage equal to 2% of their maximum health (max. 100 vs. monsters).
Passive: While in Human Form, Shyvana passively generates Fury every 1.5 seconds. Shyvana's basic attacks generate 2 Fury, even in Dragon Form or against structures.
Fury gained per 1.5 seconds: 1 / 2 / 3
Active: Shyvana transforms into a dragon and dashes to a target location. Enemies along her path take magic damage and are pushed toward her target location.
Magic Damage: 175 / 300 / 425 (+ 70% AP)
While in Dragon Form, Shyvana's Fury decays at a rate of 5 per second. Once her FURY is depleted, she will return to her normal state. Dragon's Descent has no cooldown or initial cost but can only be activated when Shyvana has 100 Fury.
Dragon's Descent has an effective duration of 20 seconds when not attacking. When permanently attacking at 2.5 attack speed, it has an indefinite effective duration.
Dragon's Descent has an effective cooldown of 150 / 75 / 50 seconds when not attacking. When permanently attacking at 2.5 attack speed, it has an effective cooldown of about 17.65 / 15.8 / 14.3 seconds.