Lingering Pain

This is a Magus Arcana — a class feature gained through that class's own talent choices, not a feat you pick through normal feat selection.

(Su) The magus can expend 1 point from his arcane pool as an immediate action after hitting a target with a weapon attack. All damage from that attack (including damage from a spell cast using the spellstrike ability) is considered continuous damage for the purposes of any concentration checks made by the target prior to the beginning of the magus's next turn.