Choose Future

In the round immediately following the casting of this spell, the affected creature is allowed two rolls for any normal attack roll, initiative roll, or saving throw. The affected creature can then choose the roll he prefers.
For example, a priest casts choose future on a warrior companion. In the next round, the warrior attacks an enemy with his sword. The warrior makes two attack rolls instead of one, then chooses which roll will determine the outcome of his attack.

[Tome of Magic]

Sphere: Time
(Divination)
Level: 3

Range: Touch
Components: V, S, M
Duration: 1 round
Casting Time: 3
Area of Effect: One creature
Saving Throw: None

Material Components:
two grains of sand and a rose petal