The Alchemist NPC will tell you that have to collect 10 Dragon Shards and bring them back to him.
After you collect 10 Dragon Shards, return to the Alchemist NPC to receive a Cor Draconis. From this moment you will have the Dragon Stone Alchemy activated and the ability to create Cor Draconis without returning to the Alchemist NPC.
or the 
button. You can also open it with the letter O. 
You can upgrade your Dragon Stone at the Alchemist NPC.
There are 3 kinds of upgrades:
• Class
• Clarity
• Level
The Class raise the intensity and the number of bonus. The Classes are: Rough, Cut, Rare, Ancient and Legendary.
To upgrade the class you must socket 5 stones of the same type and press "Refine"
The Dragon Stone may go to the next Class, stay at the same Class or advance to the next. In any case of success or failure you will only receive one Dragon Stone.
The Clarity raises the intensity of the bonus. The Clarity Grades are: Minor, Low, Intermediate, High and Super.
To upgrade the Clarity you must socket a minimum of 4 Dragon Stone of the same kind. The higher the rank, the lower the ammount of stones needed. Even in this case, the upgrade may stay in the current Clarity Grade, return to the previous or advance to the next grade.
The level raise the ammount of bonus given by the Dragon Stone. The maximum level of each Stone is based on the Class level. Rough Dragon Stone are maxed at +2 while Legendary Stone at +6.
To upgrade the level you need a special item, Dragon Bean.
- Green Dragon Bean, with the lowest success rate, and can be dropped on metins from level 95 to level 105.
- Blue Dragon Bean, with a higher success rate but dropped only from Nemere, the Ice Lord.
• White Dragon
• Fire Dragon
• Wind Dragon
• Iron Dragon
• Thunder Dragon
• Black Dragon
There are two slots for the Dragon Stone Alchemy: Sky and Earth
You can't activate both at the same time. When you activate an icon appear on your top left corner. You can deactivate the Dragon Soul System when you want. The Dragon Stone will consume the time only if the DSS is active.
To remove any equipped Stone you must use the DSS Destroyer 
. You can purchase this item at the Alchemist NPC for 100.000 gold.
To recharge a Dragon Stone you must a Time Elixir
There are 3 kinds of Elixirs:
- Time Elixir (S) 
Restores 5-15% of a Dragon Stone time
- Time Exlir (M) 
Restores 30% of a Dragon Stone time
- Time Elixir (L) 
Restores 75% of a Dragon Stone time.
You can attempt to synthesize the Time Elixir (S) by using the DSS Discharger 
. You can purchase it from the Alchemist NPC for 1.000.000 gold. You must sacrifice a Dragon Stone in order to create this Elixir. The process may fail.