Gul'dan [WIP] by Xethus

Gul'dan channels this ability for 3 seconds, and creates a healthstone. Sucessfuly casting replaces this trait with <Consume Healthstone> until the healthstone is used. Only one healthstone can be usable/created at a time. 

No cost.

Activatable after using <Create Healthstone>, Gul'dan's trait can now be reactivated to heal Gul'dan for 200 (+20 per level) health. Can only have one healthstone at a time. When the healthstone is consumed, the trait will revert back to <Create Healthstone>, and will be instantly put on a 35 second cooldown.
No cost.

A secondary resource spent on Gul'dan's heroic abilities. <Fel Burning Embers> has a cap of 20 embers. Embers are built whenever Gul'dan lands one of his fel fire-based abilities (not including <Rain of Fel Fire>) on an enemy. Embers will decay if Gul'dan hasn't landed an ability for 15 seconds. After this initial 15 seconds, embers will decay at a rate of 1 ember every 2 seconds.

Gul'dan instantly casts a fel-infused fire bolt traveling in a line, dealing 150 (+10 per level) damage to the first enemy hit. If fel incinerate hits a target with the <Backdraft> debuff applied to them, <Fel Incinerate>'s cooldown is reduced 2 seconds, and 10 (+1.5 per level) mana is refunded. Generates 1 fel burning ember.

Cooldown: 8 seconds
Cost: 70 mana

Gul'dan casts for .75 seconds and fears target enemy for 1 second, causing target enemy to walk slowly in a direction for the duration of the fear. If <Fear> is cast on an enemy with the <Backdraft> debuff, target will be feared for an additional 1 second.

Cooldown: 20 seconds
Cost: 75 mana

Gul'dan instantly inflicts 50 (+15 per level) damage to target enemy. <Fel Conflagrate> burns for an additional 10 (+.5 per level) damage every .5 seconds for 2 seconds (4 ticks) after it is first applied. <Fel Conflagrate> applies <Backdraft> debuff on target enemy, slowing them by 25% for  2 seconds. <Backdraft> debuff is consumed when another ability is cast on top of it, however the slow will carry out it's full 2 second duration. Generates 2 fel burning embers.

Cooldown: 16 seconds
Cost: 45 mana

Gul'dan channels <Chaos Bolt> for 3 seconds, releasing a fast traveling blast of raw chaos, dealing 1200 (+20 per level) to target enemy. If <Chaos Bolt> is cast on an enemy with the <Backdraft> debuff, <Backdraft> will proc and deal an additional 100 (+15 per level).

Cooldown: 80 seconds
Cost: 10 fel burning embers and 100 mana.

Gul'dan instantly casts an AoE rain of fel-infused molten lava at target location, dealing 125 (+8 per level) every second to anyone in <Rain of Fel Fire>'s AoE until Gul'dan toggles <Rain of Fel Fire> off, or Gul'dan runs out of resources (Mana or fel burning embers). If an enemy with the <Backdraft> debuff is standing inside <Rain of Fel Fire>'s AoE, the enemy will be slowed for 35%, this slow persists as long as the enemy is within <Rain of Fel Fire>'s AoE, the enemy will also become vulnerable, increasing all damage taken by 50%. Vulnerability also persists as long as the enemy is within <Rain of Fel Fire>'s AoE.

Cooldown: 16 seconds.
Cost: 3 fel burning embers per second and 15 mana per second.

Gul'dan summons a fel dreadsteed. Has 2 different uses when In combat and Out of combat.

In combat: Gul'dan instantly summons his fel dreadsteed, increasing his movement speed by 25%, but dealing damage equivalent to 3% of his current HP to himself every 1.5 seconds until he dismounts.

Out of combat: Gul'dan mounts his fel dreadsteed normally, and it goes a normal mount speed.