Enigmatic Nullification
Source
Character Operations Manual pg. 99
Your research into nullifying the effects of magic has given you greater insight into the mystical forces that suppress the effects of one school of magic. When you select this alternate class feature, choose one school of magic other than universal. Once per day as a reaction after you have used Mysticism to identify a spell being cast or the effects of a magic item, you can expend 1 Resolve Point and one spell slot of the highest level you can cast to disrupt the casting of that spell, prevent an effect a magic item is creating from happening or continuing, or suppress the ongoing magical effect of a magic item for 1d4+1 rounds. The spell or effect you disrupt must be from the school of magic you’ve chosen.
You can select this class feature multiple times. Each time you do so, choose a different school of magic.
ID
8d96215fa3d1b70f8cf4943b