You can counter spells with your magical Sleight of Hand.

Prerequisite(s): Sleight of Hand 10 ranks, Improved Counterspell, ranged legerdemain class feature

Benefit: When an opponent within range of your ranged legerdemain ability casts a spell while you have a readied action to counter their spell, you can make a Sleight of Hand check (DC 20 + the spell's level) to counter the spell instead of identifying the spell and countering it with your own spell. If this check fails, you may not choose to counter with a spell instead.

Normal: You can counter a spell by making a Spellcraft check to identify it and casting the same spell.