Portentous Spell
Feat 16
Source Pathfinder Player Core 2
Your spellcasting is rife with strange lights, mild fumes, and other captivating effects that befuddle your foes. If the next action you use is to Cast a Spell, any creature that attempts to use a reaction triggered by your Cast a Spell activity takes a –2 circumstance penalty to attack rolls and skill checks rolled as part of the reaction.
In addition, if the spell includes a spell attack or requires a saving throw, creatures you hit or that fail their saves are Fascinated with you until the start of your next turn.
Effect: Portentous Spell
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.
ManipulateYou must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
MentalA mental effect can alter the target's mind. It has no effect on an object or a mindless creature.
OracleThis indicates abilities from the oracle class.
SpellshapeSpellshape actions tweak the properties of your spells. You must use a spellshape action directly before casting the spell you want to alter. If you use any action (including free actions and reactions) other than casting a spell directly after, you waste the benefits of the spellshape action. The benefit is also lost if your turn ends before you cast the spell. Any additional effects added by a spellshape action are part of the spell's effect, not of the spellshape action itself.
VisualA visual effect can affect only creatures that can see it. This applies only to visible parts of the effect, as determined by the GM.