For the netherboss reward shop material that gives the trait: Hoo Ho Ha,
“After this creature is killed it is resurrected as Imp Impington Prime”
Upon activating the creature gains no trait of Imp Impington Prime, as happens with the haunted golem, nor does the creatures race get changed.
I wonder if this is intentional? As at the moment it is strictly worse than the haunted golem, and I got excited thinking it would have a cool trait.
Btw, I think that these on death transform effects should probably not be prevent by the no resurrection realm trait, as they can only occur once and change the creature type