Baron Rivendare by Urdraf

Passive
Attacks of you and your nearby allies heal for 15% of their damage done, increases the health regeneration of nearby allies by 25%, and reduces the health regeneration of nearby enemies by 10%.

4 second cooldown
55 mana
Deals 193 (plus 4% per level) damage to an enemy, and half that to enemies between you and the target. Long Range.

Raise Dead: Your ghoul will spit out bile at the enemy's location, dealing 60% of the total damage dealt by Clawing Shadows over 3 seconds.

28 second cooldown
100 mana
Inflicts an enemy with a spreading plague, spreading to enemies every second for 10 seconds. The Plague itself lasts for 9 seconds, dealing 1093 (plus 4% per level) damage over the duration, up to a maximum of 30% of an enemy's total health in damage.

Raise Dead: Your ghoul will also spread the Plague to nearby enemies at 50% effectiveness. This version of the Plague will be overridden by the normal one.

11 second cooldown
80 mana
Channels for 3 seconds, consuming nearby enemies in darkness. During the channeling, consumed enemies are slowed by 50% and takes 2% of their current health every second, and dealing 20% of their current health after the channeling. You are unstoppable while channeling, but take 200% increased damage.

Raise Dead: For every consumed enemy, your ghoul will have 10% increased movement and attack speed.

15 second cooldown
Summons a Ghoul permanently, which will aid you in combat. It will use an ability based on what abilities you cast.

Passive
Unholy Aura no longer grants your allies healing on attack, but increases it's effect by 40% and cause you to deal damage equal to 50% of the healing.

Raise Dead: Your ghoul still benefits from Unholy Aura, and also deals damage equal to 50% of the healing done.

15 second cooldown
40 mana
Strikes up to 5 enemies, dealing 193 (plus 4% per level) damage and healing all nearby allies for 300% of the healing. If there are no nearby allies, you are healed for 900% of the damage.

Raise Dead: Your ghoul is always healed by Heart Strike, and does not count as an ally. Your ghoul will be healed alongside you. Your ghoul also deals 20% increased damage to enemies damaged by Heart Strike for 3 seconds after being cast.