Fins to Feet

Stormwrack (Sto)Supplementals (3.5)
School
Transmutation
Casting Time
1 standard action
Components
V, S
Range
Touch
Target
One willing creature
Duration
1 hour/level
Saving Throw
Fortitude negates (harmless)
Spell Resistance
Yes (harmless)

This spell transforms tails, tentacles, or finned extremities into humanoid legs and feet.
Creatures so affected lose any natural swim speed they possess but gain a land speed instead.
Transmuted Medium creatures have a base land speed of 30 feet, Small and smaller creatures have a base land speed of 20 feet, and Large or larger creatures have a base land speed of 40 feet.
The creature loses any natural attacks based on its tail or tentacles.