Assassin’s Blood

Adventuring gear, poison (ingested)

• Properties: Poison
• Cost: 150 gp

A creature subjected to this poison must make a DC 10 Constitution saving throw. On a failed save, it takes 6 (1d12) poison damage and is poisoned for 24 hours. On a successful save, the creature takes half damage and isn’t poisoned.

Source: Dungeon Master’s Guide p. 258. Available in the SRD