Zurvan by Ariaka5

Zurvan (or the Ancient One) was a primal Zerg of Zerus who had lived for millions of years. He was spawned before the Overmind, and lived to see the return of the Zerg Swarm to Zerus during the Second Great War. It shepherded a de-infested Sarah Kerrigan's rebirth into the Swarm, before challenging her and subsequently being killed and having its essence absorbed by her.

credit: http://starcraft.wikia.com/wiki/Zurvan


Concept

Zurvan is an unconventional Hero. If you're familiar with this character from SC2 you'll know that he is a massive character, and it would be strange to shrink him down to be a playable character in HotS. Because of his massive size he would be more of a stationary Hero whose large model would live close to the base, and have little to no effect on the game other than a cool visual. Zurvan, like Abathur, supports his team through intervention and the strategic placement of his spawning pool and usage of his abilities. The spawning pool would act as his character in the sense that that is what the enemy would need to destroy to kill Zurvan. His life is based on the survival of his spawning pool which he places on the battleground. The distance the pool can be placed from him & the base increases as he levels. 

Zurvan is one with the earth, and so his abilities and concepts deal with manipulating it or growing or healing units with it.


Builds

Minion Builds
The spawning pool, like in SC, can spawn minions. At first it can only spawn zerglings, and can spawn more types based on talent selection. Zurvan can boost his early minions (zerglings) late game, or choose to spawn larger/stronger minions (Ultralisks). Minions (by group) can be micro-managed. The spawning pool will automatically spawn them when their cooldown is up and if mana is available, but the player can choose to select a group and send them after objectives, enemies etc.

Tentacle Builds
Zurvan has these massive tentacles that you need to dodge in SC2. The concept around them in game would be that they get sent from his base model anywhere with vision on the map. The tentacles would tunnel to a location, pop out of the ground doing damage, and then slam the ground doing additional damage and stunning units/heroes in a small radius. Talents can be selected to increase the number of tentacles that can be sent, as well as to decrease the ability delay (as it takes time for the tentacle to burrow and get to location).

Pool Builds
The pool has a low passive health & mana regen for Allies that stand in it, but it can be increased with talents. With talents Zurvan can add defensive units to his pool along with allowing Allies to walk through and contract and apply debuffs to the enemy team. 


Heroics
Primal Rage - idea from SC2 during the end of his encounter where he's breathing fire/lightning in an area. In HotS his head (like the tentacle) would burrow to a location, and breath damage in an area. It would be cool if everyone knew he was coming by seeing the ground/screen shake a bit and hear a roar or something.

Assimilation - Zurvan energizes an ally Hero, causing them to grow large for a short time increasing their damage, attack, life and health regeneration.