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.
Shyvana gains 5 / 10 / 15 / 20 armor and magic resist (doubled in 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
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.
Shyvana's autoattacks against non-structures reduce the cooldown of Twin Bite by 0.5 seconds.
Twin Bites flat cooldown reduction is not effective against structures.
The only exception to Dragon FormTwin Bite applying on-hit effects to all affected targets is Tiamat and Ravenous Hydra's passive effect Cleave, as it has an internal cooldown of 0.05 seconds when triggered on different targets. This is a special case to prevent abuse.
Active: Shyvana surrounds herself in flame for 3 seconds, dealing magic damage to enemies within 162.5 range each second and gaining bonus movement speed. The bonus movement speed decreases by 15% of its original value per second. "Burnout" deals 20% extra damage to monsters.
Burnout has no cast time and does not interrupt Shyvana's previous orders.
Attacks against structures will increase Burnout's duration.
COOLDOWN: 12 / 11 / 10 / 9 / 8
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).
Flame Breath's mark damage will not apply spell effects or life steal.
COST: 5 fury per second
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.