Lurky by Magnecyl

It was a sunny the day Murky suddenly disappeared in a flash of light and thunder. Not many seemed to care about the baby murloc's sudden disappearance except for Lurky. Lurky spent entire days trying to figure out where his dear little brother had gone, until the day the Nexus chose him too.

The transition to the Nexus was not easy, and it damaged the poor murlocs brain as well as body. Now, a terrifying darkness lurks beneath his cute and squishy exterior, waiting to be unleashed. 
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Block – Periodically reduces the damage received from Hero Basic Attacks by 50%. Stores up to 2 charges.

Envenom – Activate to poison an enemy hero, dealing 180 damage over 10 seconds. 

Bulbfish, Boomfish – At the end of the duration of Bulbfish, the fish explodes dealing an additional 3(+3) damage to the target and reveal a large area for 10 seconds. 

Focused Soundwaves – Murloc Lullaby stuns a hero for 2 seconds and deal 36(+9) damage if only one hero is hit. 

Durky's Slaughter (Only Available if Durky's Madness is picked) – For each hero takedown as Durky, gain 20% attack damage, attack speed and health until the end of the transformation.
First Aid – Activate to heal 35% of your max Health over 6 seconds.

Massive Chomp! – Chomp! Now deal its damage to an area around the main target in addition to previous effects.  [hr]

Tier 4 - Level 10

Slime Extraordinaire – Lurky instantly applies 5 stacks of Goo to all enemy heroes on the map. 75S cooldown.

Slice and Dice – Lurky brandishes his swords, dealing 94(+17) damage per second to the closest enemy for 4 seconds. Prioritizes heroes.
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Tier 5 - Level 13

Spell Shield – Upon taking Ability Damage, reduce that damage and further Ability Damage by 50% for 3 seconds. Can only trigger once every 30 seconds. 

Rapid Metabolism – Chomp! Now restores 10% of your maximum Health for each enemy hero hit. 

Slayer of Giants – Basic Attacks against enemy heroes deal bonus damage equal to 1.5% of the Hero's maximum Health. This effect is doubled as Durky.

Durky's Path of War (Only Available if all previous Durky Talents are chosen) – Killing a minion as Durky restores 5% Durkness, killing a hero as Durky restores 25% Durkness. 
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Tier 6 - Level 16 

Volatile Goo – Activate to detonate the Goo on enemies around Lurky, dealing 20(+7) damage to the targets for each stack of Goo, up to a maximum of 5 stacks. 60 second cooldown.

Chompier Chomp! - Increase Chomp! damage by 25%. Cooldown is reset if Chomp! Kills an enemy.

Durky's Neural Control (Only Available if all previous Durky Talents are chosen) – You can now completely control Durky.
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Tier 7 - Level 20 

Slime Extraordinaire...er – Slime Extraordinaire now stuns and reveals all heroes for 1.5 second. 

Bolt of the Storm – Activate to teleport to a nearby location.

Durky's Revenge (Only Available if all previous Durky Talents are chosen) – Upon dying when transformed into Durky, revive at your corpse after 4 seconds. This ability has a 180 second cooldown.
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Durkness is a secondary bar Lurky has instead of mana. It depicts the current influence of the destructive and malevolent being that resides within him. 
Should the bar reach 100%, Durky will arise from within transforming the murloc into a terrifying being with his own stats and spells. 
From the start, you cannot control Durky's actions other than his three spells. He will automatically seek out enemies, attacking them until they are out of sight. If no enemies are near, he will walk towards the closest lane. 
His attacks will prioritize heroes.

These are the ways of gaining, and losing, Durkness:

[ul]
[li]Every second Lurky is outside of combat, he gain 1% Durkness per second.[/li]
[li]Every second Lurky is in combat, he lose 2% Durkness per second. [/li]
[li]Lurky counts as being in combat if he has dealt, or taken, damage in the last 3 seconds.[/li]
[li]Durkness is reset to 0% if Lurky scores a takedown.[/li]
[li]When Durky is unleashed, you lose 8% Durkness per second. [/li]
[li]Once you're back at 0% Durkness, you transform back into Lurky.[/li]
[/ul]
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Thank you for reading my concept for Lurky, murloc lurker! If you have any feedback, whether it's about the text structure, balancing or just thoughts I'd gladly accept it.
I would also like to thank Severage and his Malthael Concept from which I took inspiration regarding structuring.

Cheers!