Planar Threat (3.5e Class)
From D&D Wiki
Making a Planar Threat
Starting Age: Moderate.
|1st||+1||+2||+2||+2||Monster Ability, Planar Corruption, Hated|
Class Skills (4 + Int modifier per level, ×4 at 1st level)
All of the following are class features of the planar threat.
Monster Ability: At each level, a planar threat gains a single ability, attack, or quality from a monster that resides on their aligned plane with HD (or CR) equal to or less than theirs.
Planar Corruption: A planar threat must choose a plane to align with, and has a single limb (arm or leg) deformed or otherwise discolored to show their association with their specific plane. This is visible to the naked eye unless concealed.
Hated: Planar threats are shunned by most of society as "inhuman", and most people who learn that the player is planar threat will refuse to speak to or do business with them, and may even seek to harm them.
Epic Planar Threat
4 + Int modifier skill points per level.
Monster Ability The epic planar threat continues to gain abilities at each epic level.