Bloodhound

(Masters of the Wild: A Guidebook to Barbarians, Druids, and Rangers, DnD 3.0)

Divination

Level: ; Ranger 1
Components: V, S
Casting Time: 1 action
Range: Personal
Target: You
Duration: 1 hour/level

If you fail a Wilderness Lore check to track a creature while this spell functions, you can immediately attempt another roll against the same DC to establish the trail.
It the reroll fails, you must search for the trail for 30 minutes (if outdoors) or 5 minutes (if indoors) before trying again.