Level 1:

Offspring: (Quest) Spawn 60 Whelps. Reward: Broodmother gains a second charge.

Fire Claws: Hitting two or more enemy heroes with Dragon Claw at one time increases the extra duration provided to Deep Breath to 0.75 seconds per hero hit.

Nesting: The area of fire left by Deep Breath is permanently increased by 0.5% for each Whelp you spawn.

Whiplash: Enemy heroes that collide with terrain after being hit by Tail Swipe are stunned for 0.75 seconds.



Level 4:

Separation Anxiety: Whelps attack 35% faster when they are not within Onyxia's vision radius.

Do Not Disturb: Eggs you lay become cloaked after 5 seconds, but their health is reduced by 50%. Whelps that are hatched from these eggs being destroyed have their damaged increased by an additional 50%.

Frenzy: (Quest) Hit 20 enemy heroes with Dragon Claw. Reward: Dragon Claw gains a charge.

Combustion: Enemies hit by your Tail Swipe take extra damage from your Deep Breath equal to the slow they are experiencing from Tail Swipe.



Level 7:

Maul: Dragon Claw deals 75% more damage to targets hit by Dragon Claw in the last 2 seconds.

Crushing Blow: Increase the slow provided by Tail Swipe to 60%, decaying over 3 seconds.

Black Dragonflight: The cooldown of Broodmother refreshes 35% faster while you are using Dragonflight.

Dominion: Your fires expire 100% slower while you are using Dragonflight.



Level 10:

See above section.



Level 13:

Bellowing Roar: Stun all nearby enemy heroes for 0.75 seconds. An untalented Whelp is summoned for each enemy hero stunned by Bellowing Roar. 60 second cooldown.

Many Whelps: Your eggs each hatch an additional Whelp. The duration and health of these extra Whelps is reduced by 50%.

Stoke The Flames: Basic attacks you deal to targets within the area of Deep Breath reduce the cooldowns of your abilities by 1 second.

From The Ashes: Entering Dragonflight is instant while you are within the flames left by Deep Breath. You cannot be unmounted by enemies for 2 seconds after entering Dragonflight this way.



Level 16:

Dragon Roost: Egg clusters persist after first spawning Whelps, continuing to hatch one Whelp every 30 seconds until that egg cluster is destroyed.

Wildfire: Enemy heroes that leave the area of Deep Breath cause a trail of fire to follow them for 3 seconds. This flame persists until the Deep Breath it originated from expires.

She Deep Breaths More: Deep Breath gains a charge and the duration of your active flames is paused while you are channeling another Deep Breath.

Dragon Hide: Reduce the damage you take while channeling Deep Breath by 75%, and reduce the damage you take while you have flames on the battlefield by 25%.



Level 20:

Fan The Flames: Wing Buffet increases the duration of all flames it effects by 0.75 seconds per second.

Home Turf: Enemy heroes feared by Onyxia's Lair spawn three Whelps for 5 seconds. These Whelps will only attack the target they spawned from.

Spitfire Whelps: Whelps leave a small patch of fire at their location for 6 seconds when they are killed or expire.

Flame Forged Whelps: Whelps that hatched naturally from eggs last until they are killed and their health is increased by 100%.