Soul Tick (CR 1/8)

Fine Outsider (Evil, Extraplanar, lawful, and Symbiont)
Alignment: Always lawful evil
Initiative: +3 (Dex); Senses: darkvision 60 ft. and Spot +4
Languages: Telepathy with host


AC: 21 (+8 size, +3 Dex), touch 21, flat-footed 18
Hit Dice: 1/4d8 (1 hp)
Fort +2, Ref +5, Will +2
Speed: 5 ft.
Space: 1/2 ft./0 ft.
Base Attack +1; Grapple -20
Attack: Bite +12 melee
Full Attack: Bite +12 melee
Damage: Bite attach
Special Attacks/Actions: Attach, blood drain
Abilities: Str 1, Dex 16, Con 11, Int 14, Wis 11, Cha 8 (Ego: 13)
Special Qualities: enhance magic, impede magic, protective aura, outsider traits, symbiont traits, vulnerable to holy power
Feats: Weapon Finesse
Skills: Concentration +4, Diplomacy +3, Hide +23, Knowledge (any two) +6 Listen +4, Move Silently +7, Spot +4, and Survival +4
Advancement: -
Climate/Terrain: Any land and underground (Nine Hells)
Organization: Solitary (symbiont)
Treasure: -

Source: Fiend Folio

Attach (Ex): if a soul tick hits with its bite attack, it uses its mouth and eight legs to burrow into the target's flesh, latching firmly onto the opponents body. An attached soul tick loses its Dexterity bonus to AC, making its AC 18.

Blood Drain (Ex): A soul tick drains blood, dealing 1 point of Constitution damage each day it remains attached. Ordinarily, the host regains 1 lost Constitution point each night, just before the soul tick drains 1 new point, keeping the host at an equilibrium point of -1 to its normal Constitution. However, once per day as a full-round action the soul tick can overfeed, draining enough blood to deal 1d4 points of Constitution damage to its host, usually as punishment for displeasing it.

Enhance Magic (Ex): Any spells with the death or evil descriptor, as well as spells that use negative energy in any way, are enhanced when cast by the soul tick's host. Such spells are automatically empowered without changing the spell slot required or casting time.

Impede Magic (Ex): Any spells with the chaos or good descriptor, as well as spells that use positive energy in any way, are impeded when cast by the soul tick's host. The host must make a Spellcraft check (DC 15 + spell level) when trying to cast such a spell, if this check fails, the spell does not function and is lost. If the check succeeds, the spell functions normally.

Protective Aura (Su): A protection from good or protection from chaos effect constantly wards a soul tick and its host, as the appropriate spell cast by a 12th-level sorcerer. The soul tick can change the aura at will as a free action. The aura can be dispelled, but the soul tick can create it again during its next turn as a free action.

Evil Subtype

A subtype usually applied only to outsiders native to the evil-aligned Outer Planes. Evil outsiders are also called fiends. Most creatures that have this subtype also have evil alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has an evil alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the evil subtype overcomes damage reduction as if its natural weapons and any weapons it wields were evil-aligned (see Damage Reduction).

Extraplanar Subtype

A subtype applied to any creature when it is on a plane other than its native plane. A creature that travels the planes can gain or lose this subtype as it goes from plane to plane. This book assumes that encounters with creatures take place on the Material Plane, and every creature whose native plane is not the Material Plane has the extraplanar subtype (but would not have when on its home plane). An extraplanar creatures usually has a home plane mentioned in its description. These home planes are taken from the Great Wheel cosmology of the D&D game (see Chapter 5 of the Dungeon Master's Guide). If your campaign uses a different cosmology, you will need to assign different home planes to extraplanar creatures.

Creatures not labeled as extraplanar are natives of the Material Plane, and they gain the extraplanar subtype if they leave the Material Plane. No creature has the extraplanar subtype when it is on a transitive plane; the transitive planes in the D&D cosmology are the Astral Plane, the Ethereal Plane, and the Plane of Shadow.

Lawful Subtype

A subtype usually applied only to outsiders native to the lawful-aligned Outer Planes. Most creatures that have this subtype also have lawful alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has a lawful alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the lawful subtype overcomes damage reduction as if its natural weapons and any weapons it wields were lawful-aligned (see Damage Reduction).