Hamund Handbook Volume 1
Poison
Uncommon
A creature that drinks this poison must succeed on a DC 12
Constitution saving throw or become poisoned for 24 hours.
While poisoned in this way, a creature magically turns to
stone and is petrified. A creature remains petrified like this
until either the 24 hours have passed, or until freed by the
greater restoration spell or similar magic.
Cost: 300 gp