Feat: Magical Onslaught

Your eidolon's attack provides you an opening for one of your spells. Your eidolon makes a melee Strike against a creature, and then you cast a 1- or 2-action cantrip targeting the same creature. If your eidolon's Strike hits, the creature is Off Guard against your spell (if it requires a spell attack roll) or takes a –2 circumstance penalty to its save against your spell (if it requires a saving throw). If your eidolon's Strike and the spell deal the same type of damage, combine the damage of both for the purpose of resistances and weaknesses. Both your eidolon's attack and any spell attack roll you make count toward your multiple attack penalty, but the penalty doesn't increase until after both attacks have been made.