Energetic Resonance
Feat 6
Source Pathfinder Advanced Player's Guide
Trigger You would take acid, cold, electricity, fire, or sonic damage from a spell.
Requirements You have an unexpended spell slot of a rank equal to or higher than the triggering spell.
Your blood resonates with magical energy, mitigating the effects of harmful spells.
Expend one of your spell slots of a rank equal to or higher than that of the triggering spell. You gain resistance to one of the triggering effect's damage types equal to twice the expended spell slot's rank.
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.
SorcererThis indicates abilities from the sorcerer class.