This is going to be a simple, easy to implement alchemy system using the scripting system of eAthena for the short-term entertainment of the current player base.

• The ingredients used for alchemy are herbs which are dropped by immobile, non-attacking herb "mosters". I would suggest to place these on the maps 31 and 32, which are currently quite insignificant and rarely visited labyrinth-like forest maps.
• Herbs exist in 4 different colors
• 4 different herbs are combined to a potion through an NPC dialog with a cauldron "NPC"
• The result is one of four random healing potions. The currently useless INT stat of the character can influence the quality.
  • rand(INT) <= 5: tiny potion
  • rand(INT) <= 10: small potion
  • rand(INT) <= 20: medium potion
  • rand(INT) <= 40: large potion