Hornung's Surge Selector

The great Hornung, having been blasted more than once by his own wild surges, devised a method of improving the results of wild magic and, not incidentally, his own chances of survival. The result was Hornung's surge selector. By casting this spell, the wild mage gains greater control over wild surges. When the caster's spell creates a wild surge, two separate results are determined from the Wild Magic Surge Results table. The caster can then choose which of the two results will take effect. This spell can be used in conjunction with Nahal's Reckless Dweomer.
The spell's duration is a fixed number of surges or 12 hours, whichever comes first. The wild mage is able to shape one wild surge per five levels of his experience; thus, a 15th-level caster could shape three wild surges within a 12-hour period. At the end of 12 hours. the spell expires, regardless of the number of surges remaining.

[Tome of Magic]

School:Wild Magic
Magic Type: Alteration
Restrictions: Wild Mages only
Level: 7
Rarity: Common

Range: 0
Components: V, S, M
Duration: Special
Casting Time: 1 round
Area of Effect: The caster
Saving Throw: None

Material Components
a brass spinner