You can move, cast a Spell, and move again before foes react.
Prerequisites: Key ability score 15, Dex 15, Mobility, caster level 4th.
Benefit: As a full action, you can move up to your speed and cast a single Spell with a casting time of one standard action or less at any point during your movement. If you have a Supernatural ability that can be activated as a standard action or less, you can instead use that ability at any point during your movement.
Normal: You can move only before or after casting a Spell, not both.