Dragonhome delve, western Skyrim. The delve contains unkillable draugr npc's. They rise from wall mounted coffins and attack the player. None of these draugr have the red aura or health bar associated with enemy npc. The draugr cannot be attacked as player skills do not work.
Your immersion is breaking my entitlement. Buff Sorc's. Darkshroud the cremator Death by furRubeus BlackFluffy knight BladesThe Fat PantherPsijic Fungal SausageFlesheater the VileCaspian Rafferty FernsbyArchfiend Warlock PiersThe Black BishopEvil Wizard Lizard (EU)Neberra Vestige Fajeon (EU)Salanis Deathstick (EU)Blood Mage Alchemist (EU)