Jinxed Spell

Any creature that fails its saving throw against a jinxed spell also suffers the effects of your jinx. This feat has no effect on spells that do not allow a saving throw. If the spell affects an area or multiple creatures, you must select one creature to take the jinx, unless you have the Area Jinx feat; if you have the Area Jinx feat, choose a jinx burst area within the spell's area or among its targets and apply the jinx to those in the burst that failed their save.

Prerequisites

Any two metamagic feats, Halfling Jinx alternate racial trait