Arcane Flux

Abjuration
Level: Spellbreaker 1
Components: V
Casting Time: 1 immediate action
Range: Close (25 ft. + 5 ft./2 levels)
Target: One creature
Duration: Instantaneous
Saving Throw: None; see text
Spell Resistance: Yes
Spell Points: 1

“You cause a momentary disruption in the normal flows of magic surrounding a creature, causing spellcasters trouble.”

A creature affected by this spell while casting a spell is distracted. It must succeed on a Concentration skill check against the spell’s save DC or lose the spell.