Master's Counterspell Feat 16
Source Pathfinder Lost Omens: Pathfinder Society Guide
Prerequisites Spellmaster Dedication, master in spell attack rolls and spell DCs
Trigger A creature Casts a Spell that you have prepared, and that spell was cast or created with a tradition of magic in which you have master proficiency in spell attack rolls and spell DCs.
When a foe Casts a Spell and you can see its manifestations, you can use your magic to disrupt it. If you're a prepared caster, you can expend a prepared spell to counter the triggering creature's casting of a spell. If you're a spontaneous caster, you can expend a spell slot. The level of the prepared spell or spell slot must be at least as high as the triggering spell's level. You lose your prepared spell or spell slot as if you had Cast the Spell. You then attempt to counteract the triggering spell, and you take a -2 penalty to your counteract check; for prepared casters, the GM might waive the penalty if the spell you're expending to counterspell is especially appropriate-such as countering with the same spell, or using a Cone of Cold to counteract a Fireball.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AbjurationEffects and magic items with this trait are associated with the abjuration school of magic, typically involving protection or wards.
ArchetypeThis feat belongs to an archetype.