The Nemesis are often created by interaction with an artefact, powerful magical items that seek to protect its presence or influence others. While similar to a curse, it doesn't exactly manifest like one. It doesn't or shouldn't need a player to fail a saving throw, instead it is done by action, setting off a grisly turn of events. The Nemesis has only one objective, ruining the life of its generator.
A Nemesis can be used for a one-shot or specific dungeon. That's why it has the damage reduction and deflection bonuses. It is a perfect mirror of the character (attributes, skills, etc) except for the magic items so they should still be significantly weaker than the base character. While set up as a short-term dungeon foe, another way to use this enemy could be a long-term one. The creature sets out to ruin the PC by committing treasonous acts, not necessarily excessively evil ones so allies will know its not the individual. If you intend to use this type of creature, tone down the AC and damage reduction aspects, as it will have time to properly gear oneself.
This template can be added to any living Humanoid or Monstrous Humanoid. It happens when
good creatures are touched or affected by evil magics which creates an exact physical duplicate of the creature but it’s an evil, version; existing only to destroy the original creature.
Size and Type: It retains the creature type of the base creature. Do not recalculate hit points, skills, saves or BAB.
Speed: The base creature's speed is increased by 10.
Armor Class: Gains a deflection armor bonus of +4 versus it’s main target, +12 versus all other
creatures. It may have items that are common in an area, so give the creature weapons or items that typical humanoid creatures in a dungeon might have found.
Attack: A Nemesis retains any natural attacks it had before, and gains two natural slam attacks,
both of which are treated as primary natural attacks. If fighting in melee, a Nemesis prefers to
use it's slam attacks.
Size Slam Damage
Small 1d8 + any dmg for high strength
Medium 1d10 + any dmg for high strength
Large 1d12 + any dmg for high strength
Full Attack: A Nemesis fighting without weapons uses both of its slam attacks when making a
full attack, as well as any secondary natural attacks it might have. A Nemesis usually only uses
ranged weapons as part of a full attack.
Special Attacks: A Nemesis retains any special attacks from its base form.
Special Qualities: A Nemesis has the special qualities of the base creature, plus the following
-Darkvision out to 60 feet
-Damage reduction 5 /-- against its primary foe
-Damage reduction 20 / -- against all other foes
A Nemesis has near perfect immunity from creatures that are not it’s mimic copy. However, it has a 5/- against it’s original creature.
Frightful Presence (Ex): A Nemesis can radiate an aura of fear within a 50 foot radius around it. The Will saving throw DC for this effect is equal to 10 + the Nemesis' total HD plus any positive Charisma modifiers. Those who fail the save, do everything reasonable to avoid the creature's presence. If they are unable to leave the presence, they cower, taking no actions against the Nemesis.
It's mimic copy is never affected by its fright ability.
Unique Weakness (Su): Many times a nemesis has a unique, personal weakness due to its own history. A childhood toy, a wedding ring, etc that if confronted with can make them hesitate, causing a -3 penalty to its attack for the next hour. Give a Will DC 18 to avoid this connection. Additional times being confronted by this item will required will save by 2. (DC 16 on the second time, etc.)
Abilities: Adjust from the base creature as follows: Str +4, Con --, Int -2, Wis +2, Cha -2.
Skills: A Nemesis has skill points equal to its base creature despite the changes in it’s ability
Challenge Rating:As base creature +1
Alignment:Always Neutral Evil or Chaotic Evil. Lawful Creatures will always have a Chaotic
version of themselves, all other creatures have a Neutral Evil mimic.
Dedicated to the my beautiful wife, one day I'll be brave enough to ask if she's the evil twin or not.