Chronal Bolt

As magic missile but rather than create magical energy darts it plucks real crossbow bolts out of different points in the timeline. (Only bolts the absence of which has no major impact are so summoned). Each bolt requires an attack Roll. Rather than use base attack bonus and Dexterity modifier, these bolts use a spell attack bonus (Spell casting modifier plus your proficiency modifier).  Each bolt deals 1d8 points of damage on a successful hit, and are treated as mundane crossbow bolts for purposes of spell resistance and damage reduction