Abilities

Boneskin (Level 1): +2 to natural armor class. Every four levels this increases by an additional +2.
Animate Dead (Level 2): Once per day can summon an undead servant.
Darkvision (Level 3): Able to see in the dark
Summon Undead (Level 4): Can summon more powerful undead.
Deathless Vigor (Level 5): Gains three additional hit points as per the feat Toughness.
Undead Graft (Level 6): Replaces arm with an undead version that twice per day can paralyze opponents. At level 8 an additional use per day is gained.
Tough as Bone (Level 7): : Immune to hold, paralyze, stun.
Summon Greater Undead (Level 9): Can summon a very powerful undead creature, once per day.
Deathless Mastery (Level 10): Immune to critical hits.
Deathless Master Touch (Level 10): The undead arm graft is replaced with this more deadly arm. It can kill with just a touch. This ability may be used 3x/day.

Every 2 levels, the pale master gains additional spells per day, as if they had leveled in their previous spell caster class. This gain only applies to spells per day and not caster level.

Pale Master - Epic Levels (level 21+)

The pale master's bond with the undead continues to grow, as she becomes the epic pale master.

Hit Die: d6
Skill Points: 2 + Int Modifier every level
Bonus Feats: The epic pale master gains a bonus feat every three levels
Boneskin: improves by +2 for every four levels past level 8.
Undead Graft: can use this supernatural attack an additional time per day for every 3 levels gained.
Deathless Vigor: every five levels an additional +5 permanent hit points are gained.

Epic Pale Master Bonus Feats List

Automatic Quicken Spell, Automatic Silent Spell, Automatic Still Spell, Energy Resistance, Epic Spell Focus, Epic Spell Penetration, Improved Combat Casting.