East Flame Guardian (Cinderspawn)

"While the flames burn blue, the guardian will not return!"

Type: Undead (List)

Race: Fire Elemental (List)

Sub-race: Cinderspawn (List)

Monster Manual classification: Missing from MM: Fire Elemental

Alignment: Chaotic Evil

Boss: Orange Named - Mini boss

CR:  ♦16Normal ♥18Hard ♠21Elite

Attack: Enervation, Punch (Bludgeoning + Cold), Frostfire Smash (AoE explosion centred on cinderspawn - cold damage and stun), Slow

Special Qualities: Permanent Fire Shield (cold) spell, Immunity to cold, Undead Traits

Habitats: 

• Inferno of the Damned — Eastern set of torches (Inferno side) after all 4 torches have been extinguished
• Inferno of the Damned (epic)

Description:
"The final undead guardian stands before you."
To summon the Flame Guardian's spirit, you need to blow out the torches around the summoning symbol in the Inferno after you have beaten that same guardian in Eberron. You can either use a cold spell (e.g. from an Ice Storm wand), or you can lure an Air Mephit Warrior to blow it out with his abrasive breath.
"The Abbot's foul lapdogs are no more. Find me at the center of the Inferno."