Loatheb by chubra

Level 1

...Block: Every 5 seconds, gain 50 Physical Armor against next enemy Hero Basic Attack, reducing damage taken by 50%. Stores up to 2 charges.
...Fungal Resilience: Every 10 seconds, gain 40 Spell Armor, reducing Spell Damage taken from the next enemy Heroes Spell by 40%.
...Regeneration Master: (!)Quest: Gathering a Regeneration Globe increases Health Regeneration by 1 per second up to 20.
(!)Reward: After gathering 20 Regeneration globes, increase Health Regeneration by an additional 5 per second and gain 200 additional HP.

Level 4

... Prolonged Incubation: (!)Quest: Affect 5 enemy Heroes with Deathbloom for its entire duration.
(!)Reward: Increases the duration of Deathbloom by 3 seconds.
...Endurance: Increases in and out-of-combat movement speed bonus of Giants Stride by 5%. Additionally, transition from in to out-of-combat move speed is reduced to 2 seconds.
...Dispel: Active: Cleanse an ally Hero from roots, stuns, slows and disorient effects. Additionally, removes all damage over time effects. Cooldown: 40 seconds.

Level 7

...Affliction: Necrotic Aura deals an additional 100% more damage every second.
...Fungal Symbiote: Applying Fungal Parasite on an ally or enemy Hero also applies an untalented Fungal Parasite onto Loatheb.
...Evolving Parasites: (!)Quest: Affect 20 ally Heroes with Fungal Parasite.
(!)Reward: After affecting 10 Heroes reduce Mana Cost by 15 Mana.
(!)Reward: After affecting 20 Heroes add an additional charge of Fungal Parasite.

Level 10

...Fungal Spores.
...Plague Spores.

Level 13

...Decay: Increases healing reduction of Necrotic Aura to 40% and its radius by 50%.
...Unholy Frenzy: Using Loathebs Gift on an ally Hero sends them into a killer frenzy, increasing all damage that they deal by 20%.
...Life Leech: Loathebs Basic Attacks apply a debuff on enemy Heroes which stacks 3 times. On a 3rd attack, the target is Marked. If Loatheb or an ally Hero attack the Marked enemy, they will consume the stacks and heal for 90 (+4% per level). Loatheb heals 50% more. Stacks last for 5 seconds, after which all stacks are lost. Only one target can be marked at the time. Attacking another Hero removes stacks from the previous one.

Level 16

...Contamination: Deathbloom damage over time debuff is spread to nearby targets after the initial target blooms or is healed. Affected targets take the same damage per second as the initial Deathbloom target, but 50% damage of the 'bloom' effect. Cannot spread again to previously affected targets.
...Early Bloomer: For every second of Deathblooms duration, reduce its cooldown by 0.5 seconds.
...Mutation: Increases Health Regeneration bonus by an additional 200%.

Level 20

...Crippling Spores: Fungal Spores now root enemy Heroes.
...Empowered Plague: Increases the damage of Plague Spores by 50%.
...Gift of Plaguelands: Enemy Heroes affected by Loathebs Gift have all healing received reduced by 90%, but the effect lasts for 2 seconds.

'It is said that Loatheb controls the power of healing itself.'
This sentence sparked the concept as it is. I imagined Loatheb to be something between a Specialist and a Support, but the more I thought about how he controls the powers of healing, the more I leaned towards him being a Support - but not a regular one. Loatheb doesn't heal directly. He is a plagued fungal giant, so I assumed healing in a conventional way like Uther or Rehgar wasn't the best route. However, he can manipulate the healing (either health regeneration or healing received) which made much more sense and made him more interesting. Obviously, I did research on his Naxxramas encounter (which is where all his info is found anyway) and got some ideas from there.

Loatheb is somewhere in the middle - truest to the Support role. He is not a HEALER, nor is he really offensive (think Tyrande who is more an Assassin rather than a Support). He has a blend of both: a SUPPORTERS SUPPORT!
Imagine having Loatheb along side Uther in your team. Now Uther can heal quite well, but Loatheb could buff his healing to the next level. With this type of a kit, Loatheb is something like an Abathur that specs into his shield. Unlike him though, Loatheb can off-tank (which is why I dedicated his Level 1 talents to be tanky and unavoidable).
With Necrotic Aura and both Heroic Abilities, Loatheb possesses some lane control and his DoTs grant him a sustained source of damage. Of course, he can't clear the lane like Gul'dan for example, nor does he possess the steady damage of Nazeebo, but he can do both just enough to make a difference. This variety is his greatest strength and thus would make him a great addition to any team composition! He is the jack of all trades, but master of none.

I assume everything is pretty clear and understandable, but just in case I will add stuff here as needed/required/requested.

Basic Ability:...Deathbloom - DoT damage won't dismount the target. However, area damage done once the target 'Blooms' will dismount both the host and all nearby targets.
Also the 'Bloom' effect is triggered early by a direct healing source such is Chain Heal. Regrowth, although a HoT, is cast DIRECTLY and thus will trigger it. AoE heals and healing auras (think of Lúcio), as well as regen globes and fountain healing DO NOT trigger an early 'bloom'.

Level 20:...Gift of Plaguelands - Duration reduction (from 3 to 2 seconds) only applies to enemy Heroes. Ally Heroes still have the full duration. Increased damage taken still applies to both ally and enemy.

Level 20:...Crippling Spores - Root applies only to Heroes, but the move speed reduction still applies to other Non-Heroic enemy targets (otherwise this would provide a perfect way to stall lanes). Root lasts for 3 seconds just like the slow.

5/29/18 (29.05.2018)
Published.

5/31/18 (31.05.2018)
Minor text changes and bugged icons fixed.

7/8/18 (08.07.2018)
Deathbloom: Affected targets now take 220 (+4% per level) damage when they are healed (down from 280).
Level 16 talent: Contamination reworked. Once Deathbloom spreads, targets affected take full damage from DoT effect, but take 50% less damage from the 'bloom' effect.
Level 16 talent: Early Bloomer: Cooldown reduction buffed to 0.5 from 1 second.

7/25/18 (25.07.2018)
Health reduced from 2558 to 2158.
Plague Spores: Bonus damage from Necrotic Aura removed.