The cryohydra was a relative of the standard hydra that was able to breathe frost from its heads.
Cryohydras were known to inhabit the Umber Marshes in Aglarond.
- ↑ 1.0 1.1 Skip Williams, Jonathan Tweet, Monte Cook (July 2003). Monster Manual 3.5. (Wizards of the Coast), pp. 156–157. ISBN 0-7869-2893-X.
- ↑ Gary Gygax (1977). Monster Manual. (TSR, Inc), pp. 53–54. ISBN 0-9356-9600-8.
- ↑ Richard Baker, Matt Forbeck, Sean K. Reynolds (May 2003). Unapproachable East. (Wizards of the Coast), p. 94. ISBN 0-7869-2881-6.