The Amoraks scrambled back at the sight of the black heart, at its grotesque, rapid beating. Already, flesh was beginning to wrap around the heart due to the regeneration provided by the condition known as 'Undeath'.
It was not that the Amoraks were unused to the sight of viscera, for they were wild specimens that likely ate their prey raw and live, but more that they were instinctively repulsed by the presence of the blackened heart.
The Collector, too could feel this to a degree. The parts of its body that were enriched and relied upon magical energy instinctively classified any Undead presence as a threat which made sense in that the origin of this pathogen seemed to nullify any magic, not to mention the capacity for its spread.