From Pathfinder Society Scenario #5-01: Intro: Year of Unfettered Exploration, which isn't enabled.

Hyacinth Lamprey

CREATURE -1

UNCOMMON TINY AQUATIC ELEMENTAL PLANT

Perception +6; darkvision

Skills Athletics +3, Stealth +6

Str +0, Dex +5, Con +2, Int -5, Wis +1, Cha -2

AC 15; Fort +7, Ref +8, Will +2

HP 6

Speed 5 feet, swim 20 feet

Melee Mandibles +8 (finesse), Damage plus Attach

Attach

When a hyacinth lamprey hits a target larger than itself, its circular rows of teeth attach it to that creature. This is similar to grabbing the creature, but the lamprey moves with that creature rather than holding it in place. The lamprey is Off-Guard while attached. If the lamprey is killed or pushed away while attached to a creature it has drained water from, that creature takes 1 persistent bleed damage. Escaping the attach or removing the lamprey in other ways doesn't cause bleed damage.

Drain Water

Requirements The hyacinth lamprey is attached to a creature

Effect The hyacinth lamprey drains water from the creature it is attached to. This deals 1d4 damage, and the hyacinth lamprey gains temporary Hit Points equal to the damage dealt. A creature that has its water drained by a hyacinth lamprey is Drained 1 until it receives healing (of any kind or amount).

Pathfinder Society Scenario #5-01: Intro: Year of Unfettered ExplorationOGL