unique ne medium amphibious undead 

Perception +10; tremorsense 30 feet

Languages Aklo (Cannot Speak Any Language)

Skills Athletics +12

Str +4 Dex +1 Con +3 Int -2 Wis +3 Cha -2

AC  19; Fort +11, Ref +7, Will +11

HP 80, negative healing; Immunities death effects, disease

Death Burst (aura, necromancy, occult) When the bloodsiphon dies, its body explodes in a cloudy red burst of necrotic dried blood in a 20-foot area. Creatures in range must attempt a DC 21 Reflex save. Critical Success The creature is unaffected.Success The creature takes 2d6 negative damage.Failure The creature takes 4d6 negative damage.Critical Failure The creature takes 6d6 negative damage and is enfeebled 2 for 1 hour.

Speed 10 feet, swim 20 feet

Melee [>] mouth +14, Damage 2d8+6 piercing plus Grab

Ranged [>] spittle +11 (range 30 feet), Damage 3d6 negative

Blood Drain [>] Requirements The bloodsiphon has a creature grabbed or restrained; Effect The bloodsiphon drains blood from the creature it has grabbed. This deals 4d4 damage and the bloodsiphon grows temporarily moist and slimy as it regains 8 Hit Points, gaining any excess as temporary Hit Points that last for 1 minute. A creature that has its blood drained by the bloodsiphon is drained 1 until it receives any type of healing.

AV1, page 23.