Time Shudder

Transmutation
Level: Artificer * 2, Magus * 2, Sorcerer */Wizard * 2, Summoner * 2
Components: V, S, M (a tiny hourglass)
Casting Time: 1 Standard Action
Range: 30 ft.
Area: 30-ft.-radius emanation, centered on you
Duration: 1 round
Saving Throw: None
Spell Resistance: yes

You cause a ripple in time that affects all creatures in the area.

At the start of each creature's turn, there is a 50% chance the creature is hasted (as haste otherwise it is slowed (as slow).