Blood FeastSpell 5
Source Pathfinder #154: Siege of the Dinosaurs
Traditions Arcane, Divine, Occult
Cast

Range touch
Target 1 creature
Your head splits vertically into an enormous maw, which feasts upon the target's blood, dealing 12d6 piercing damage, depending on your spell attack roll. After the spell, your head sews back together as if it had never split apart. You gain temporary Hit Points for 1 minute equal to half the piercing damage the target takes.
If you are a gug, increase the piercing damage by 2d6 and increase the Persistent Bleed Damage you deal on a critical hit by 1d8. This spell doesn't alter a gug's appearance.
Critical Success The creature takes double damage and (@item.rank - 4)d8 bleed.
Success The creature takes full damage.
Failure You miss and the creature takes no damage.
Heightened (+1) The piercing damage increases by 2d6, and the Persistent Bleed Damage on a critical increases by 1.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
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.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
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.