Alchemy
From Ardrana
Alchemy is one of the thaumaturgical schools of magic. In this approach to magic, spell effects are achieved through the combination of unusual material components. Spells that can be cast through the use of strange powders and reagents belong to the school of alchemy.
Note: The school of alchemy originally appeared in this form in the Player's Option: Spells and Magic supplement for the AD&D game from TSR. Its use here is for the purposes of providing context for the campaign only.