Cascading Ray Feat 10
Source Pathfinder Secrets of Magic
Prerequisites Spellstrike
Requirements Your last action was a successful Spellstrike, and the spell you cast dealt energy damage (acid, cold, electricity, fire, force, negative, positive, or sonic).
Magical energy spills out to extend beyond the creature you struck. The flowing energy forms a ray with a range of 60 feet from the creature you damaged. You can't target any of the creatures you damaged with your Spellstrike with the ray. Make a spell attack roll against the new target's AC, at the same multiple attack penalty as the Strike. On a hit, the target of the ray takes 1d4 damage per spell level of the same type of energy damage the spell deals (double damage on a critical hit). If you cast the spell in your Spellstrike from a spell slot, the damage from Cascading Ray increases to 1d8 damage per spell level.
If the spell deals more than one type of energy damage, you choose only one for the ray. This ray has the attack trait, the school and tradition traits of the original spell, and the trait matching the damage type.
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.
AttackAn ability with this trait involves an attack. For each attack you make beyond the first on your turn, you take a multiple attack penalty.
MagusThis indicates abilities from the magus class.