Leech

 Leech

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Type	Creature
Source	Common bloodsucking leeches
Classification	Creature-Handling & Biological Agents
Primary Uses	Bloodletting brews, purgative potions
Common Potions	None listed
Alchemical Properties	Draws out blood and humours
Magical Effects	None alone
Hazard Level	Low
Shelf Life	Stored alive in water
Notes	Often used in grim old-fashioned recipes kept for historical study.

A staple of archaic potion-making, leeches were once the cornerstone of all purgative and humoral brews. Their magical relevance has faded with modern alchemical advancements, but they remain important in traditional recipes. Students often find them unsettling, though they are harmless when handled properly.