PRE-QUEST :
http://wowwiki.wikia.com/wiki/Quest:...e_Task_(Horde) or
http://wowwiki.wikia.com/wiki/Quest:...ask_(Alliance) COMPLETED.
Quest starts from
Drops from Yogg'Saron 25 Hard Mode with 1% of low chance because of lore-related complexity. (Not only it has not been confirmed that Old Gods do actually have hearts, but also Yogg Saron does not actually die in Ulduar. Champions/Players merely "defeated him back". So, it would have to be a low rate of drop chance to make it look like we barely "hurt" him, not shattered his heart in pieces.)
The quest would preferably go with no map-indicator or helping tools to make it actually "legendary" like it used to be back in Vanilla.
1. Origin of Corruption
The player has to find someone who knows what to do with this Shard in order to combat against the future invasion of the Old Gods. Although the Keepers of Ulduar would argue against it, you decided to not say a thing to them as you never know when they will be mindcontrolled by another Old God again.
Horde : Sage Truthseeker
Alliance : High Explorer Magellas
These are the two people who have studied about the Old Gods and Titans in depth after analyzing Discs of Uldaman that you gave them long time ago. They will surely know what to do with the shard.
2. The Key
Those two NPCs remind the player that there is a place called "Uldum" that they were never able to gain access to because they did not have Discs of Uldum. The NPCs suggest that they might be able to find any information regarding the heart of the Old Gods inside Uldum.
Q: Why Uldum?
A: Uldum is supposed to be a research facility of Titans to make Azeroth a better place. There is nowhere better than research facility to actually learn some useful stuff!
This is really a subject of change. You can make it so that the player can go through heckload of adventures, but I just wanted to keep it raid-related and simple.
Defeating Algalon 25 men mode allows you to talk with him to add Discs of Uldum on top of Discs of Uldaman so you can access the Uldum database. Algalon was previously impressed by how persistent we were, so he accepts our request.
3. The Knowledge
You go back to The Stonewatcher at the gate of Uldum (read the PREQUEST quest-line if you don't know what I am talking about) and recognizes that you do have the Discs of Uldum and gives you the information regarding heart of the Old Gods in the database.
You learn that using the whole or piece of the Old Gods heart, you can actually control the part of the power of the Old Gods. However to do so, the player will have to have enough knowledge about this world to understand the complex Crafting Plans written in Titanic to craft
Mah Naus, the First Hunger.
Requirement is The Loremaster itself. Crafting will require 200 Saronite Bars (Blood of Yogg'Saron), 20 Runed Orb, and 40 Eternal Shadow.
Mah Naus actually means the First Hunger in Shath'yar language.
4. The Empowerment
The player has to collect the shard and make the power more "controllable". This means that while one player has reached the 4th part of the quest, ALL THE SHARDS HAS TO BE RESERVED TO THIS ONE PLAYER. 1 Shard will increase the duration of Curse of Flesh effect by 5 second and the player will obtain Kaaxth Magg, the Thousand Suffering when he/she empowers Mah Naus 3 times. Considering the very low chance of shard, 3 times will be very challenging and time consuming.
5. The Ultimatum
The player realizes he/she needs a stronger container. Archmage Ronin suggests the player to use Titansteel Case, the strongest known to mankind. Requires 20 Titansteel Bar, 40 Runes Orb, and 40 Eternal Shadow.
This will reward you with Kaaxth Magg, the Thousand Suffering.