Vertigo

Player's Handbook II (PH2)Updated Supplementals (3.5)

Vertigo is a D&D 3.5 spell (Illusion (Phantasm)) from PH2. On class lists for Bard (Level 2), Beguiler (Level 2), Sorcerer (Level 2), and others. Range or area: Close (25 ft. + 5 ft./2 levels); Saving throw: Will disbelief; Duration: 1 round/level (D); Casting time: 1 standard action.

School
Illusion (Phantasm)
Casting Time
1 standard action
Components
V, S
Range
Close (25 ft. + 5 ft./2 levels)
Target
One living creature
Duration
1 round/level (D)
Saving Throw
Will disbelief
Spell Resistance
No

You cripple a target with sensations of falling.
The subject of this spell becomes dizzy as the ground seems to drop away beneath its feet.
The subject must succeed on a DC 10 Balance check at the start of each turn to take a move action.
If it fails, it cannot move.
If it fails the check by 5 or more, it falls prone.
While affected, the subject also takes a -2 penalty on attack rolls and saving throws.
Airborne creatures receive a +4 bonus on saves against this spell and do not need to make the Balance checks.